Remove unused DEFSYMs

Remove DEFSYMs that aren't used at the C level.  Also:
* src/decompress.c (Qzlib_dll):
* src/font.c (Qunicode_sip):
* src/frame.c (Qtip_frame):
* src/ftfont.c (Qserif):
* src/gnutls.c (Qgnutls_dll):
* src/xml.c (Qlibxml2_dll):
Move from here ...
* src/w32fns.c (syms_of_w32fns): ... to here,
as these are used only on MS-Windows.

1 files changed, 0 insertions, 1 deletions

diff --git a/src/cmds.c b/src/cmds.c
index 6f9982eebb2..a975a8ed4e0 100644
--- a/src/cmds.c
+++ b/src/cmds.c
@@ -526,7 +526,6 @@ internal_self_insert (int c, EMACS_INT n)
 void
 syms_of_cmds (void)
 {
-  DEFSYM (Qkill_backward_chars, "kill-backward-chars");
   DEFSYM (Qkill_forward_chars, "kill-forward-chars");
 
   /* A possible value for a buffer's overwrite-mode variable.  */