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

idea/testData/quickfix/expressions/unnecessarySafeCall2.kt.after

@@ -0,0 +1,7 @@
+// "Replace with dot call" "true"
+fun foo(a: Any) {
+    when (a) {
+        .equals(0) => true
+        else => false
+    }
+}