Restructure "Safe Delete" test data directories

Conflicts:
	generators/org/jetbrains/jet/generators/tests/GenerateTests.java

idea/testData/safeDelete/deleteFunction/kotlinFunctionWithJava/overrideAndImplement2.java

@@ -0,0 +1,5 @@
+class B extends A implements Z {
+    public void foo() {
+
+    }
+}