Revert "time: refactor naming of gmtime and localtime"

This reverts commit 87a380efcd4eeea23c875cd9b7a331d15b240053.

Author: cosminbasca

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/TimeModuleBuiltins.java

@@ -79,7 +79,7 @@ private static Object[] getTimeStruct(double seconds, boolean local) {
     }
 
     // time.gmtime([seconds])
-    @Builtin(name = "gmtime", fixedNumOfArguments = 1)
+    @Builtin(name = "__truffle_gmtime_tuple__", fixedNumOfArguments = 1)
     @GenerateNodeFactory
     public abstract static class PythonGMTimeNode extends PythonBuiltinNode {
         @Specialization
@@ -89,7 +89,7 @@ public PTuple gmtime(double seconds) {
     }
 
     // time.localtime([seconds])
-    @Builtin(name = "localtime", fixedNumOfArguments = 1)
+    @Builtin(name = "__truffle_localtime_tuple__", fixedNumOfArguments = 1)
     @GenerateNodeFactory
     public abstract static class PythonLocalTimeNode extends PythonBuiltinNode {
         @Specialization