Core/Cleanup: Drop various unused code

src/server/game/Chat/Chat.cpp

@@ -1755,38 +1755,6 @@ char* ChatHandler::extractKeyFromLink(char* text, char const* const* linkTypes,
     return NULL;
 }
 
-char const *fmtstring(char const *format, ...)
-{
-    va_list        argptr;
-    #define    MAX_FMT_STRING    32000
-    static char        temp_buffer[MAX_FMT_STRING];
-    static char        string[MAX_FMT_STRING];
-    static int        index = 0;
-    char    *buf;
-    int len;
-
-    va_start(argptr, format);
-    vsnprintf(temp_buffer,MAX_FMT_STRING, format, argptr);
-    va_end(argptr);
-
-    len = strlen(temp_buffer);
-
-    if (len >= MAX_FMT_STRING)
-        return "ERROR";
-
-    if (len + index >= MAX_FMT_STRING-1)
-    {
-        index = 0;
-    }
-
-    buf = &string[index];
-    memcpy(buf, temp_buffer, len+1);
-
-    index += len + 1;
-
-    return buf;
-}
-
 GameObject* ChatHandler::GetNearbyGameObject()
 {
     if (!m_session)

src/server/game/Chat/Chat.h

@@ -402,7 +402,4 @@ class CliHandler : public ChatHandler
         Print* m_print;
 };
 
-char const *fmtstring(char const *format, ...);
-
 #endif
-