agp/sworks: Remove unused variable 'current_size'

Fix the compiler warning

  drivers/char/agp/sworks-agp.c: In function 'serverworks_configure':
  drivers/char/agp/sworks-agp.c:265:37: warning: variable 'current_size' set but not used [-Wunused-but-set-variable]
    265 |         struct aper_size_info_lvl2 *current_size;

by removing the variable.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Helge Deller <deller@gmx.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20211201114645.15384-7-tzimmermann@suse.de

drivers/char/agp/sworks-agp.c

@@ -262,13 +262,10 @@ static void serverworks_tlbflush(struct agp_memory *temp)
 
 static int serverworks_configure(void)
 {
-	struct aper_size_info_lvl2 *current_size;
 	u32 temp;
 	u8 enable_reg;
 	u16 cap_reg;
 
-	current_size = A_SIZE_LVL2(agp_bridge->current_size);
-
 	/* Get the memory mapped registers */
 	pci_read_config_dword(agp_bridge->dev, serverworks_private.mm_addr_ofs, &temp);
 	temp = (temp & PCI_BASE_ADDRESS_MEM_MASK);