Kotlin Facet: Drop Gradle/Maven-based version info providers

They are obsolete since compiler/library version can be detected
based on module dependencies generated on external model import

idea/idea-maven/src/org/jetbrains/kotlin/idea/maven/facet/MavenKotlinVersionInfoProvider.kt

@@ -1,43 +0,0 @@
-/*
- * Copyright 2010-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.jetbrains.kotlin.idea.maven.facet
-
-import com.intellij.openapi.module.Module
-import com.intellij.openapi.roots.ModuleRootModel
-import org.jetbrains.idea.maven.project.MavenProjectsManager
-import org.jetbrains.kotlin.config.TargetPlatformKind
-import org.jetbrains.kotlin.idea.facet.KotlinVersionInfoProvider
-import org.jetbrains.kotlin.idea.facet.mavenLibraryIds
-import org.jetbrains.kotlin.idea.maven.configuration.KotlinMavenConfigurator
-
-class MavenKotlinVersionInfoProvider : KotlinVersionInfoProvider {
-    override fun getCompilerVersion(module: Module): String? {
-        val projectsManager = MavenProjectsManager.getInstance(module.project)
-        val mavenProject = projectsManager.findProject(module) ?: return null
-        return mavenProject.findPlugin(KotlinMavenConfigurator.GROUP_ID, KotlinMavenConfigurator.MAVEN_PLUGIN_ID)?.version
-    }
-
-    override fun getLibraryVersions(module: Module, targetPlatform: TargetPlatformKind<*>, rootModel: ModuleRootModel?): Collection<String> {
-        val projectsManager = MavenProjectsManager.getInstance(module.project)
-        val mavenProject = projectsManager.findProject(module) ?: return emptyList()
-        return targetPlatform
-                .mavenLibraryIds
-                .flatMap { mavenProject.findDependencies(KotlinMavenConfigurator.GROUP_ID, it) }
-                .map { it.version }
-                .distinct()
-    }
-}

idea/src/META-INF/gradle.xml

@@ -43,7 +43,6 @@
 
         <projectConfigurator implementation="org.jetbrains.kotlin.idea.configuration.KotlinGradleModuleConfigurator"/>
         <projectConfigurator implementation="org.jetbrains.kotlin.idea.configuration.KotlinJsGradleModuleConfigurator"/>
-        <versionInfoProvider implementation="org.jetbrains.kotlin.idea.configuration.GradleKotlinVersionInfoProvider"/>
         <platformGradleDetector implementation="org.jetbrains.kotlin.idea.inspections.gradle.DefaultPlatformGradleDetector"/>
 
         <scriptTemplatesProvider

idea/src/META-INF/maven.xml

@@ -2,7 +2,6 @@
   <extensions defaultExtensionNs="org.jetbrains.kotlin">
     <projectConfigurator implementation="org.jetbrains.kotlin.idea.maven.configuration.KotlinJavaMavenConfigurator"/>
     <projectConfigurator implementation="org.jetbrains.kotlin.idea.maven.configuration.KotlinJavascriptMavenConfigurator"/>
-    <versionInfoProvider implementation="org.jetbrains.kotlin.idea.maven.facet.MavenKotlinVersionInfoProvider"/>
     <mavenProjectImportHandler implementation="org.jetbrains.kotlin.allopen.ide.AllOpenMavenProjectImportHandler"/>
     <mavenProjectImportHandler implementation="org.jetbrains.kotlin.noarg.ide.NoArgMavenProjectImportHandler"/>
   </extensions>

idea/src/org/jetbrains/kotlin/idea/configuration/GradleKotlinVersionInfoProvider.kt

@@ -1,55 +0,0 @@
-/*
- * Copyright 2010-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.jetbrains.kotlin.idea.configuration
-
-import com.intellij.openapi.externalSystem.util.ExternalSystemApiUtil
-import com.intellij.openapi.module.Module
-import com.intellij.openapi.roots.ModuleRootModel
-import org.jetbrains.kotlin.config.TargetPlatformKind
-import org.jetbrains.kotlin.idea.facet.KotlinVersionInfoProvider
-import org.jetbrains.kotlin.idea.facet.mavenLibraryIds
-import org.jetbrains.kotlin.idea.inspections.gradle.DifferentKotlinGradleVersionInspection
-import org.jetbrains.kotlin.idea.inspections.gradle.DifferentStdlibGradleVersionInspection
-import org.jetbrains.kotlin.idea.refactoring.toPsiFile
-import org.jetbrains.kotlin.idea.refactoring.toVirtualFile
-import org.jetbrains.kotlin.idea.util.application.runReadAction
-import org.jetbrains.plugins.gradle.service.project.data.ExternalProjectDataCache
-import org.jetbrains.plugins.gradle.util.GradleConstants
-import org.jetbrains.plugins.groovy.lang.psi.GroovyFileBase
-import java.io.File
-
-class GradleKotlinVersionInfoProvider : KotlinVersionInfoProvider {
-    private fun getGradleFile(module: Module): GroovyFileBase? {
-        val rootDir = ExternalSystemApiUtil.getExternalProjectPath(module) ?: return null
-        val externalProjectDataCache = ExternalProjectDataCache.getInstance(module.project)
-        val rootProject = externalProjectDataCache.getRootExternalProject(GradleConstants.SYSTEM_ID, File(rootDir)) ?: return null
-        val buildFile = rootProject.buildFile ?: return null
-        return buildFile.toVirtualFile()?.toPsiFile(module.project) as? GroovyFileBase ?: return null
-    }
-
-    override fun getCompilerVersion(module: Module): String? {
-        return runReadAction { getGradleFile(module)?.let { DifferentKotlinGradleVersionInspection.getKotlinPluginVersion(it) } }
-    }
-
-    override fun getLibraryVersions(module: Module, targetPlatform: TargetPlatformKind<*>, rootModel: ModuleRootModel?): Collection<String> {
-        return runReadAction {
-            getGradleFile(module)?.let {
-                DifferentStdlibGradleVersionInspection.getKotlinStdlibVersions(it, targetPlatform.mavenLibraryIds)
-            }
-        } ?: emptyList()
-    }
-}