Fix redundant wording

src/backend/utils/adt/misc.c

@@ -173,7 +173,7 @@ pg_terminate_backend(PG_FUNCTION_ARGS)
 	if (r == SIGNAL_BACKEND_NOPERMISSION)
 		ereport(ERROR,
 				(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
-				 (errmsg("must be superuser or have the same role to terminate backends running in other server processes"))));
+				 (errmsg("must be superuser or have the same role to terminate other server processes"))));
 
 	PG_RETURN_BOOL(r == SIGNAL_BACKEND_SUCCESS);
 }