cmd/ld: remove duplicated nuxiinit() call.

It is already called by linknew().

LGTM=dave
R=rsc, dave
CC=golang-codereviews
https://golang.org/cl/120760043

src/cmd/ld/pobj.c

@@ -63,7 +63,6 @@ main(int argc, char *argv[])
 	INITRND = -1;
 	INITENTRY = 0;
 	linkmode = LinkAuto;
-	nuxiinit();
 	
 	if(thechar == '5' && ctxt->goarm == 5)
 		debug['F'] = 1;