[Platform API] Clean-up some usages of Platform

Mostly unused imports. Also, in some places,
TargetPlatform/MultiTargetPlatform were just passed around without
actually using (e.g. in deserialization)

compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/JvmResolverForModuleFactory.kt

@@ -120,7 +120,4 @@ object JvmResolverForModuleFactory : ResolverForModuleFactory() {
 
         return ResolverForModule(CompositePackageFragmentProvider(providersForModule), container)
     }
-
-    override val targetPlatform: TargetPlatform
-        get() = JvmPlatform
 }

compiler/frontend/src/org/jetbrains/kotlin/analyzer/AnalyzerFacade.kt

@@ -192,7 +192,7 @@ class ResolverForProjectImpl<M : ModuleInfo>(
                     descriptor as ModuleDescriptorImpl,
                     projectContext.withModule(descriptor),
                     moduleContent,
-                    platformParameters(resolverForModuleFactory.targetPlatform),
+                    platformParameters(module.platform ?: TODO("Missing platform!")),
                     targetEnvironment,
                     this@ResolverForProjectImpl,
                     languageVersionSettings,
@@ -307,8 +307,6 @@ abstract class ResolverForModuleFactory {
         languageVersionSettings: LanguageVersionSettings,
         targetPlatformVersion: TargetPlatformVersion
     ): ResolverForModule
-
-    abstract val targetPlatform: TargetPlatform
 }
 
 class LazyModuleDependencies<M : ModuleInfo>(

compiler/frontend/src/org/jetbrains/kotlin/analyzer/common/CommonResolverForModuleFactory.kt

@@ -152,8 +152,8 @@ object CommonResolverForModuleFactory : ResolverForModuleFactory() {
         targetEnvironment: TargetEnvironment,
         metadataPartProvider: MetadataPartProvider,
         languageVersionSettings: LanguageVersionSettings
-    ): StorageComponentContainer = createContainer("ResolveCommonCode", targetPlatform) {
-        configureModule(moduleContext, targetPlatform, TargetPlatformVersion.NoVersion, bindingTrace)
+    ): StorageComponentContainer = createContainer("ResolveCommonCode", CommonPlatform) {
+        configureModule(moduleContext, CommonPlatform, TargetPlatformVersion.NoVersion, bindingTrace)
 
         useInstance(moduleContentScope)
         useInstance(LookupTracker.DO_NOTHING)
@@ -173,9 +173,8 @@ object CommonResolverForModuleFactory : ResolverForModuleFactory() {
                 ?: error("No MetadataFinderFactory in project")
         useInstance(metadataFinderFactory.create(moduleContentScope))
 
+
+
         targetEnvironment.configure(this)
     }
-
-    override val targetPlatform: TargetPlatform
-        get() = CommonPlatform
-}
+}