Fixed test data to use only annotation syntax with @

idea/testData/findUsages/kotlin/companionObject/javaUsage.0.kt

@@ -8,7 +8,7 @@ class Foo {
         fun f() {
         }
 
-        platformStatic fun s() {
+        @platformStatic fun s() {
         }
 
         val CONST = 42

idea/testData/findUsages/kotlin/findClassUsages/kotlinClassAllUsages2.1.kt

@@ -2,7 +2,7 @@ package client
 
 import server.X
 
-X("")
+@X("")
 class Client {
 
 }

idea/testData/findUsages/kotlin/findClassUsages/kotlinClassAllUsages2.results.txt

@@ -1,2 +1,2 @@
-Annotation (5: 1) X("")
+Annotation (5: 2) @X("")
 Usage in import (3: 15) import server.X