staging: keucr: remove String func prototypes

Commit 1b9f644dfeb638e0146ce54f4e48c87a2841a603 already got rid of
StringCopy and StringCmp, so remove the left over prototypes.

Signed-off-by: Davidlohr Bueso <dave@gnu.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/keucr/smcommon.h

@@ -25,7 +25,5 @@ Define Difinetion
 #define ERR_NoSmartMedia    0x003A /* Medium Not Present */
 
 /***************************************************************************/
-void StringCopy(char *, char *, int);
-int  StringCmp(char *, char *, int);
 
 #endif