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

idea/testData/quickfix/createFromUsage/createVariable/parameter/inClassInitializer.kt.after

@@ -0,0 +1,7 @@
+// "Create parameter 'foo'" "true"
+
+class A(foo: Int) {
+    init {
+        val t: Int = foo
+    }
+}