video: fbdev: sis: Drop useless call to SiS_GetResInfo()

Coverity reported:

    Useless call (USELESS_CALL) side_effect_free: Calling
     SiS_GetResInfo(SiS_Pr, ModeNo, ModeIdIndex) is only useful for its
    return value, which is ignored.

And this is correct - so drop the call.

Signed-off-by: Sam Ravnborg <[email protected]>
Reported-by: Colin Ian King <[email protected]>
Addresses-Coverity: ("Useless call")
Acked-by: Thomas Zimmermann <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Thomas Winischhofer <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

drivers/video/fbdev/sis/init.c

@@ -2659,7 +2659,6 @@ SiS_SetCRT1ModeRegs(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
    if(SiS_Pr->UseCustomMode) {
       infoflag = SiS_Pr->CInfoFlag;
    } else {
-      SiS_GetResInfo(SiS_Pr, ModeNo, ModeIdIndex);
       if(ModeNo > 0x13) {
 	 infoflag = SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag;
       }