hrc cleanup: Remove unused defines

Rename GID_FORMEL to GID_MATH. GID_FORMEL was a compatibility alias
for the new res string GID_MATH.

Change-Id: I9a5a6972988353ffc001ecac1a746b59d09cb6cb

sfx2/inc/sfx2/sfx.hrc

@@ -213,12 +213,6 @@
 #define GID_CONTROLS                        (RID_GROUPS_SFXOFFSET+25)
 #define GID_NAVIGATION                      (RID_GROUPS_SFXOFFSET+26)
 
-// compatibility-#defines
-#define GID_FORMEL                          GID_MATH
-#define GID_OPT                             GID_OPTIONS
-#define GID_DOC                             GID_DOCUMENT
-#define GID_APP                             GID_APPLICATION
-
 // =========================================================================
 
 #define RID_OPTIONS_START           (SID_LIB_START +    2000)

starmath/source/smres.src

@@ -1405,7 +1405,7 @@ String RID_UNDOFORMATNAME
 {
     Text = "Format" ;
 };
-String GID_FORMEL
+String GID_MATH
 {
     Text = "StarMath" ;
 };