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

idea/testData/quickfix/autoImports/unresolvedReferenceInCall.kt.after

@@ -0,0 +1,19 @@
+// "Import" "true"
+// ERROR: Please specify constructor invocation; classifier 'ArrayList' does not have a companion object
+
+// KT-4000
+
+package testing
+
+import java.util.ArrayList
+
+class Test {
+    fun foo(a: Collection<String>) {
+
+    }
+}
+
+fun test() {
+    val t = Test()
+    t.foo(ArrayList)
+}