Revert "Fixed compilation. Some class files generated by kotlinc may have no annotation (that should be fixed later)."

This reverts commit aa412c72fc.

This workaround is not needed anymore after the fix in c24688c

Original commit: 0217121814

jps/jps-plugin/src/org/jetbrains/kotlin/jps/build/KotlinBuilder.kt

@@ -264,7 +264,7 @@ public class KotlinBuilder : ModuleLevelBuilder(BuilderCategory.SOURCE_PROCESSOR
             if (!generatedClass.outputFile.getName().endsWith(PackageClassUtils.PACKAGE_CLASS_NAME_SUFFIX + ".class")) return emptySet()
 
             val kotlinClass = generatedClass.outputClass
-            if (kotlinClass == null || !kotlinClass.getClassHeader().isCompatiblePackageFacadeKind()) return emptySet()
+            if (!kotlinClass.getClassHeader().isCompatiblePackageFacadeKind()) return emptySet()
 
             val classInternalName = JvmClassName.byClassId(kotlinClass.getClassId()).getInternalName()
             val oldClassSources = previousMappings.getClassSources(previousMappings.getName(classInternalName))
@@ -288,14 +288,13 @@ public class KotlinBuilder : ModuleLevelBuilder(BuilderCategory.SOURCE_PROCESSOR
         for (generatedClass in generatedClasses) {
             val outputFile = generatedClass.outputFile
             val outputClass = generatedClass.outputClass
-            val outputClassContents = if (outputClass != null) outputClass.getFileContents() else outputFile.readBytes()
 
             // For package facade classes: we need to report all source files for it, not only currently compiled
             val allSourcesIncludingOld = getOldSourceFiles(generatedClass, previousMappings) + generatedClass.sourceFiles
 
             callback.associate(FileUtil.toSystemIndependentName(outputFile.getAbsolutePath()),
                                allSourcesIncludingOld.map { FileUtil.toSystemIndependentName(it.getAbsolutePath()) },
-                               ClassReader(outputClassContents)
+                               ClassReader(outputClass.getFileContents())
             )
         }
 
@@ -321,10 +320,7 @@ public class KotlinBuilder : ModuleLevelBuilder(BuilderCategory.SOURCE_PROCESSOR
 
         var recompilationDecision = DO_NOTHING
         for (generatedClass in generatedClasses) {
-            val outputClass = generatedClass.outputClass
-            if (outputClass == null) continue
-
-            val newDecision = incrementalCaches[generatedClass.target]!!.saveFileToCache(generatedClass.sourceFiles, outputClass)
+            val newDecision = incrementalCaches[generatedClass.target]!!.saveFileToCache(generatedClass.sourceFiles, generatedClass.outputClass)
             recompilationDecision = recompilationDecision.merge(newDecision)
         }
 
@@ -518,5 +514,6 @@ private class GeneratedJvmClass (
         sourceFiles: Collection<File>,
         outputFile: File
 ) : GeneratedFile(target, sourceFiles, outputFile) {
-    val outputClass = LocalFileKotlinClass.create(outputFile)
-}
+    val outputClass = LocalFileKotlinClass.create(outputFile).sure(
+            "Couldn't load KotlinClass from $outputFile; it may happen because class doesn't have valid Kotlin annotations")
+}