Remove support for Metrowerks compiler

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
(cherry picked from commit 49746c5b86)

src/translators/btparse/btconfig.h

@@ -36,7 +36,7 @@
 /* This file knows about the following ``environments''
 	UNIX (default)
 	DOS  (use #define PC)
-	MAC  (use #define MPW; has a few things for THINK C, Metrowerks)
+	MAC  (use #define MPW; has a few things for THINK C)
  */
 
 /*
@@ -165,9 +165,6 @@ extern void fsetfileinfo (char *filename, unsigned long newcreator, unsigned lon
 #if 0
 #define MAC_FILE_CREATOR 'KAHL'   /* THINK C/Symantec C++ Text files */
 #endif
-#if 0
-#define MAC_FILE_CREATOR 'MMCC'   /* Metrowerks C/C++ Text files */
-#endif
 
 #endif