Remove 'KotlinGradleSubplugin'

^KT-48831 Fixed

libraries/tools/kotlin-gradle-plugin-api/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinGradleSubplugin.kt

@@ -19,8 +19,6 @@ package org.jetbrains.kotlin.gradle.plugin
 import org.gradle.api.Plugin
 import org.gradle.api.Project
 import org.gradle.api.provider.Provider
-import org.gradle.api.tasks.compile.AbstractCompile
-import org.jetbrains.kotlin.gradle.dsl.KotlinCommonOptions
 import java.io.File
 
 open class SubpluginOption(val key: String, private val lazyValue: Lazy<String>) {
@@ -75,37 +73,6 @@ open class CompilerPluginConfig {
     }
 }
 
-// Deprecated because most calls require the tasks to be instantiated, which is not compatible with Gradle task configuration avoidance.
-@Deprecated(
-    message = "This interface will be removed due to performance considerations. " +
-            "Please use the KotlinCompilerPluginSupportPlugin interface instead " +
-            "and remove the META-INF/services/org.jetbrains.kotlin.gradle.plugin.KotlinGradleSubplugin entry.",
-    replaceWith = ReplaceWith("KotlinCompilerPluginSupportPlugin"),
-    level = DeprecationLevel.ERROR
-)
-interface KotlinGradleSubplugin<in KotlinCompile : AbstractCompile> {
-    fun isApplicable(project: Project, task: AbstractCompile): Boolean
-
-    fun apply(
-        project: Project,
-        kotlinCompile: KotlinCompile,
-        javaCompile: AbstractCompile?,
-        variantData: Any?,
-        androidProjectHandler: Any?,
-        kotlinCompilation: KotlinCompilation<KotlinCommonOptions>?
-    ): List<SubpluginOption>
-
-    fun getSubpluginKotlinTasks(
-        project: Project,
-        kotlinCompile: KotlinCompile
-    ): List<AbstractCompile> = emptyList()
-
-    fun getCompilerPluginId(): String
-
-    fun getPluginArtifact(): SubpluginArtifact
-    fun getNativeCompilerPluginArtifact(): SubpluginArtifact? = null
-}
-
 /**
  * Gradle plugin implementing support for a Kotlin compiler plugin.
  *