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

idea/testData/quickfix/createFromUsage/createVariable/parameter/inPropertyInitializerInEnumClass.kt

@@ -0,0 +1,12 @@
+// "Create parameter 'foo'" "true"
+// ERROR: No value passed for parameter foo
+// ERROR: No value passed for parameter foo
+// ERROR: No value passed for parameter foo
+
+enum class E {
+    A
+    B
+    C
+
+    val t: Int = <caret>foo
+}