Big change in quickfix tests: no stupid test data format with "before" and "after" file prefixes

idea/testData/quickfix/createFromUsage/createFunction/component/createComponentFromUsage1.kt.after

@@ -0,0 +1,12 @@
+// "Create function 'component3'" "true"
+class Foo<T> {
+    fun component1(): Int { return 0 }
+    fun component2(): Int { return 0 }
+
+    fun component3(): Any {
+        throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
+    }
+}
+fun foo() {
+    val (a, b, c) = Foo<Int>()
+}