remove old files from checkcopyrights

Author: timfel

mx.graalpython/copyrights/overrides

@@ -292,9 +292,7 @@ graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects
 graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/code/CodeBuiltins.java,zippy.copyright
 graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/complex/PComplex.java,zippy.copyright
 graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/dict/DictBuiltins.java,zippy.copyright
-graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/dict/DictItemsBuiltins.java,zippy.copyright
 graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/dict/DictItemsIteratorBuiltins.java,zippy.copyright
-graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/dict/DictKeysBuiltins.java,zippy.copyright
 graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/dict/DictKeysIteratorBuiltins.java,zippy.copyright
 graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/dict/DictValuesBuiltins.java,zippy.copyright
 graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/dict/DictValuesIteratorBuiltins.java,zippy.copyright