Replace annotations with brackets in testData

Just in tests that changed after deprecation

compiler/testData/diagnostics/tests/annotations/atAnnotationResolve.kt

@@ -1,7 +1,7 @@
 // !DIAGNOSTICS: -UNUSED_PARAMETER
 annotation class Ann(val x: Int = 6)
 
-@Ann(1) [Ann(2)] @Ann(3) @private class A [Ann] () {
+@Ann(1) @Ann(2) @Ann(3) @private class A [Ann] () {
     @Ann(x = 5) fun foo() {
         1 + @Ann(1) 1 * @Ann(<!TYPE_MISMATCH!>""<!>) 6
 
@@ -10,5 +10,5 @@ annotation class Ann(val x: Int = 6)
 
     @Ann val x = 1
 
-    fun bar(x: @Ann(1) [Ann(2)] @Ann(3) Int) {}
+    fun bar(x: @Ann(1) @Ann(2) @Ann(3) Int) {}
 }