Don't add 'kotlin' source root to build.gradle by default

#KT-14830 Fixed

idea/idea-android/src/org/jetbrains/kotlin/android/configure/KotlinAndroidGradleModuleConfigurator.java

@@ -58,12 +58,6 @@ public class KotlinAndroidGradleModuleConfigurator extends KotlinWithGradleConfi
         return APPLY_KOTLIN_ANDROID;
     }
 
-    @Override
-    protected boolean addSourceSetsBlock(@NotNull GroovyFile file) {
-        GrClosableBlock androidBlock = getAndroidBlock(file);
-        return Companion.addLastExpressionInBlockIfNeeded(Companion.getSOURCE_SET(), Companion.getSourceSetsBlock(androidBlock));
-    }
-
     @Override
     protected boolean addElementsToFile(@NotNull GroovyFile groovyFile, boolean isTopLevelProjectFile, @NotNull String version) {
         if (isTopLevelProjectFile) {
@@ -74,11 +68,6 @@ public class KotlinAndroidGradleModuleConfigurator extends KotlinWithGradleConfi
         }
     }
 
-    @NotNull
-    private static GrClosableBlock getAndroidBlock(@NotNull GroovyFile file) {
-        return Companion.getBlockOrCreate(file, "android");
-    }
-
     KotlinAndroidGradleModuleConfigurator() {
     }
 }

idea/src/org/jetbrains/kotlin/idea/configuration/KotlinGradleModuleConfigurator.java

@@ -22,7 +22,6 @@ import org.jetbrains.kotlin.idea.KotlinPluginUtil;
 import org.jetbrains.kotlin.resolve.TargetPlatform;
 import org.jetbrains.kotlin.resolve.jvm.platform.JvmPlatform;
 import org.jetbrains.plugins.groovy.lang.psi.GroovyFile;
-import org.jetbrains.plugins.groovy.lang.psi.api.statements.blocks.GrClosableBlock;
 
 public class KotlinGradleModuleConfigurator extends KotlinWithGradleConfigurator {
     public static final String NAME = "gradle";
@@ -58,12 +57,6 @@ public class KotlinGradleModuleConfigurator extends KotlinWithGradleConfigurator
         return APPLY_KOTLIN;
     }
 
-    @Override
-    protected boolean addSourceSetsBlock(@NotNull GroovyFile file) {
-        GrClosableBlock sourceSetBlock = Companion.getSourceSetsBlock(file);
-        return Companion.addLastExpressionInBlockIfNeeded(Companion.getSOURCE_SET(), sourceSetBlock);
-    }
-
     @Override
     protected boolean addElementsToFile(@NotNull GroovyFile groovyFile, boolean isTopLevelProjectFile, @NotNull String version) {
         if (!isTopLevelProjectFile) {

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

@@ -142,15 +142,11 @@ abstract class KotlinWithGradleConfigurator : KotlinProjectConfigurator {
         val dependenciesBlock = getDependenciesBlock(file)
         wasModified = wasModified or addExpressionInBlockIfNeeded(LIBRARY, dependenciesBlock, false)
 
-        wasModified = wasModified or addSourceSetsBlock(file)
-
         return wasModified
     }
 
     protected abstract val applyPluginDirective: String
 
-    protected abstract fun addSourceSetsBlock(file: GroovyFile): Boolean
-
     protected abstract fun addElementsToFile(
             groovyFile: GroovyFile,
             isTopLevelProjectFile: Boolean,

idea/testData/configuration/gradle/default_after.gradle

@@ -21,6 +21,3 @@ buildscript {
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }
-sourceSets {
-    main.java.srcDirs += 'src/main/kotlin'
-}

idea/testData/configuration/gradle/eapVersion_after.gradle

@@ -26,8 +26,5 @@ buildscript {
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }
-sourceSets {
-    main.java.srcDirs += 'src/main/kotlin'
-}
 
 // VERSION: $VERSION$

idea/testData/configuration/gradle/m04Version_after.gradle

@@ -26,8 +26,5 @@ buildscript {
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }
-sourceSets {
-    main.java.srcDirs += 'src/main/kotlin'
-}
 
 // VERSION: $VERSION$

idea/testData/configuration/gradle/rcVersion_after.gradle

@@ -26,8 +26,5 @@ buildscript {
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }
-sourceSets {
-    main.java.srcDirs += 'src/main/kotlin'
-}
 
 // VERSION: $VERSION$