Move targetName-refine from pos/ to neg/

Author: hamzaremmal

tests/neg/targetName-refine.check

@@ -0,0 +1,7 @@
+-- [E007] Type Mismatch Error: tests/neg/targetName-refine.scala:7:27 --------------------------------------------------
+7 |val x: T { def f: Int } = C() // error
+  |                          ^^^
+  |                          Found:    C
+  |                          Required: T{def f: Int}
+  |
+  | longer explanation available when compiling with `-explain`

tests/pos/targetName-refine.scala renamed to tests/neg/targetName-refine.scala

@@ -4,5 +4,5 @@ trait T:
 class C extends T:
   @targetName("f2") def f: Int = 1
 
-val x: T { def f: Int } = C()
+val x: T { def f: Int } = C() // error