Remove unneeded default imports in stdlib and tests

libraries/tools/binary-compatibility-validator/src/main/kotlin/org.jetbrains.kotlin.tools/asmUtils.kt

@@ -8,7 +8,6 @@ package org.jetbrains.kotlin.tools
 import kotlinx.metadata.jvm.*
 import org.objectweb.asm.Opcodes
 import org.objectweb.asm.tree.*
-import kotlin.comparisons.*
 
 val ACCESS_NAMES = mapOf(
     Opcodes.ACC_PUBLIC to "public",
@@ -187,4 +186,4 @@ private fun findAnnotation(annotationName: String, visibleAnnotations: List<Anno
     visibleAnnotations?.firstOrNull { it.refersToName(annotationName) }
             ?: if (includeInvisible) invisibleAnnotations?.firstOrNull { it.refersToName(annotationName) } else null
 
-fun AnnotationNode.refersToName(name: String) = desc.startsWith('L') && desc.endsWith(';') && desc.regionMatches(1, name, 0, name.length)
+fun AnnotationNode.refersToName(name: String) = desc.startsWith('L') && desc.endsWith(';') && desc.regionMatches(1, name, 0, name.length)

libraries/tools/kotlin-stdlib-gen/src/templates/dsl/Writers.kt

@@ -94,9 +94,6 @@ fun List<MemberBuilder>.writeTo(file: File, platformSource: PlatformSourceFile)
                 writer.appendln("import withType")
             }
         }
-        writer.appendln("import kotlin.*")
-        writer.appendln("import kotlin.text.*")
-        writer.appendln("import kotlin.comparisons.*")
         if (platform == Platform.Common) {
             writer.appendln("import kotlin.random.*")
         }