don't build mmx_cmod since it ain't speeding up anything (and it's x86-only btw)

src/fe-gtk/makefile.mak

@@ -11,9 +11,6 @@ PROG = xchat.exe
 
 all: $(PROG)
 
-mmx_cmod.o: mmx_cmod.S
-	gcc -DUNDERSCORE_SYMBOLS -c mmx_cmod.S
-
 .c.obj:
 	$(CC) $(CFLAGS) -I..\..\plugins $(GLIB) $(GTK) $(SPELL) $<
 
@@ -31,7 +28,6 @@ xchat-icon.obj: xchat.res
 
 clean:
 	@del *.obj
-	@del mmx_cmod.o
 	@del $(PROG)
 	@del xchat.rc
 	@del xchat.res

src/makefile.mak

@@ -10,7 +10,6 @@ clean:
 	@del common\*.obj
 	@del common\xchatcommon.lib
 	@del fe-gtk\*.obj
-	@del fe-gtk\mmx_cmod.o
 	@del fe-gtk\xchat.exe
 	@del fe-gtk\xchat.rc
 	@del fe-gtk\xchat.res

src/makeinc.skel

@@ -43,8 +43,6 @@ LDFLAGS = $(LDFLAGS) msvcrt_winxp.obj
 LUAPATH = c:\mozilla-build\build\lua-wdk-5.1.4-2-x86
 PYTHONPATH = c:\mozilla-build\python-2.6-x86
 TCLPATH = c:\mozilla-build\tcl-8.5-x86
-
-MMX = YES
 !endif
 #############################################################
 
@@ -113,8 +111,3 @@ textgui.obj \
 urlgrab.obj \
 userlistgui.obj \
 xtext.obj
-
-!ifdef MMX
-FEGTK_OBJECTS = $(FEGTK_OBJECTS) mmx_cmod.o
-CFLAGS = $(CFLAGS) -DUSE_MMX
-!endif