mb/msi/ms7707/Kconfig: Drop invalid defaults

The PCI ID corresponds to the iGPU, which is disabled in the devicetree.
Also, the VBIOS file does not exist at the specified location.

Change-Id: I4f128d3057dc7218f32320c4e23466eb31af4e54
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45672
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/msi/ms7707/Kconfig

@@ -33,12 +33,4 @@ config CBFS_SIZE
 	hex
 	default 0x200000
 
-config VGA_BIOS_FILE
-	string
-	default "3rdparty/blobs/mainboard/\$(MAINBOARDDIR)/vgabios.bin"
-
-config VGA_BIOS_ID
-	string
-	default "8086,0102"
-
 endif