IDEA-CR-19534 TextComponentDocument — remove getChars

platform/platform-impl/src/com/intellij/openapi/editor/textarea/TextComponentDocument.java

@@ -58,12 +58,6 @@ public class TextComponentDocument extends UserDataHolderBase implements com.int
     }
   }
 
-  @Override
-  @NotNull
-  public char[] getChars() {
-    throw new UnsupportedOperationException("Not implemented");
-  }
-
   @Override
   public int getTextLength() {
     return myTextComponent.getDocument().getLength();