[python] API cleanup: remove unused deprecated API (IJPL-156972)

GitOrigin-RevId: 57adfe085fe2b77e3c608ba1230688c35b5615d0

python/python-psi-impl/src/com/jetbrains/extensions/PsiFileSystemItemExt.kt

@@ -1,31 +0,0 @@
-/*
- * Copyright 2000-2017 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.jetbrains.extensions
-
-import com.intellij.psi.PsiFileSystemItem
-import com.intellij.psi.util.QualifiedName
-import com.jetbrains.python.psi.PyPsiFacade
-import org.jetbrains.annotations.ApiStatus
-
-/**
- * @deprecated moved to {@link com.jetbrains.python.extensions}
- */
-@ApiStatus.ScheduledForRemoval
-@Deprecated(message = "Moved to com.jetbrains.python.extensions")
-fun PsiFileSystemItem.getQName(): QualifiedName? {
-  val name = PyPsiFacade.getInstance(this.project).findShortestImportableName(this.virtualFile, this) ?: return null
-  return QualifiedName.fromDottedString(name)
-}