Remove deprecated marker for JVM debugging in Kotlin code (KT-23886)

#KT-23886 Fixed

compiler/psi/src/org/jetbrains/kotlin/idea/KotlinFileType.java

@@ -61,9 +61,4 @@ public class KotlinFileType extends LanguageFileType {
     public Icon getIcon() {
         return myIcon.getValue();
     }
-
-    @Override
-    public boolean isJVMDebuggingSupported() {
-        return true;
-    }
 }