remove some leftovers of old package facades in IDE code

idea/idea-analysis/src/org/jetbrains/kotlin/idea/caches/KotlinShortNamesCache.kt

@@ -30,7 +30,6 @@ import org.jetbrains.kotlin.asJava.defaultImplsChild
 import org.jetbrains.kotlin.fileClasses.javaFileFacadeFqName
 import org.jetbrains.kotlin.idea.stubindex.KotlinClassShortNameIndex
 import org.jetbrains.kotlin.idea.stubindex.KotlinFileFacadeShortNameIndex
-import org.jetbrains.kotlin.idea.stubindex.PackageIndexUtil
 import org.jetbrains.kotlin.load.java.JvmAbi
 import org.jetbrains.kotlin.name.FqName
 import java.util.*
@@ -43,8 +42,6 @@ public class KotlinShortNamesCache(private val project: Project) : PsiShortNames
         val classNames = KotlinClassShortNameIndex.getInstance().getAllKeys(project)
 
         // package classes can not be indexed, since they have no explicit declarations
-        val packageClassShortNames = PackageIndexUtil.getAllPossiblePackageClasses(project).keySet()
-        classNames.addAll(packageClassShortNames)
         classNames.addAll(KotlinFileFacadeShortNameIndex.INSTANCE.getAllKeys(project))
 
         return classNames.toTypedArray()
@@ -56,9 +53,6 @@ public class KotlinShortNamesCache(private val project: Project) : PsiShortNames
     override fun getClassesByName(name: String, scope: GlobalSearchScope): Array<PsiClass> {
         val allFqNames = HashSet<FqName?>()
 
-        val packageClassNames = PackageIndexUtil.getAllPossiblePackageClasses(project).get(name)
-        allFqNames.addAll(packageClassNames)
-
         KotlinClassShortNameIndex.getInstance().get(name, project, scope)
                 .mapTo(allFqNames) { it.fqName }
 

idea/idea-analysis/src/org/jetbrains/kotlin/idea/stubindex/PackageIndexUtil.kt

@@ -19,14 +19,9 @@ package org.jetbrains.kotlin.idea.stubindex
 import com.intellij.openapi.project.Project
 import com.intellij.psi.search.GlobalSearchScope
 import com.intellij.psi.stubs.StubIndex
-import org.jetbrains.kotlin.psi.KtFile
 import org.jetbrains.kotlin.name.FqName
-import com.intellij.util.containers.MultiMap
-import org.jetbrains.kotlin.load.kotlin.PackageClassUtils
-import com.intellij.psi.util.CachedValuesManager
-import com.intellij.psi.util.CachedValueProvider.Result
-import com.intellij.psi.util.PsiModificationTracker
 import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.psi.KtFile
 
 public object PackageIndexUtil {
     @JvmStatic
@@ -73,22 +68,4 @@ public object PackageIndexUtil {
         }
         return result
     }
-
-    @JvmStatic
-    public fun getAllPossiblePackageClasses(project: Project): MultiMap<String, FqName> {
-        return CachedValuesManager.getManager(project).getCachedValue(project) {
-            Result(computeAllPossiblePackageClasses(project), PsiModificationTracker.OUT_OF_CODE_BLOCK_MODIFICATION_COUNT)
-        }!!
-    }
-
-    private fun computeAllPossiblePackageClasses(project: Project): MultiMap<String, FqName> {
-        val packageFqNames = KotlinExactPackagesIndex.getInstance().getAllKeys(project)
-        val result = MultiMap<String, FqName>()
-        for (packageFqName in packageFqNames) {
-            val packageClassFqName = PackageClassUtils.getPackageClassFqName(FqName(packageFqName))
-            result.putValue(packageClassFqName.shortName().asString(), packageClassFqName)
-        }
-
-        return result
-    }
 }

idea/tests/org/jetbrains/kotlin/idea/filters/KotlinExceptionFilterTest.kt

@@ -32,7 +32,6 @@ import com.intellij.testFramework.PlatformTestCase
 import com.intellij.testFramework.PsiTestUtil
 import junit.framework.TestCase
 import org.jetbrains.kotlin.idea.test.PluginTestCaseBase
-import org.jetbrains.kotlin.load.kotlin.PackageClassUtils.getPackageClassFqName
 import org.jetbrains.kotlin.load.kotlin.PackagePartClassUtils
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.test.MockLibraryUtil