Remove no-longer-used name variable in _XGetAtomName

Fixes gcc warning:
GetAtomNm.c: In function ‘_XGetAtomName’:
GetAtomNm.c:39:11: warning: unused variable ‘name’ [-Wunused-variable]
     char *name;
           ^~~~

Introduced by commit 336c1e7aSigned-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>

src/GetAtomNm.c

@@ -36,7 +36,6 @@ char *_XGetAtomName(
     Atom atom)
 {
     xResourceReq *req;
-    char *name;
     register Entry *table;
     register int idx;
     register Entry e;