kconfig: remove non-existent source

src/northbridge/amd/pi/00660F01/Kconfig does not exist.  Remove the
source statement.

Also, no kconfig files under src/soc/intel/common/basecode/.  Clean
that up.

Signed-off-by: Jack Rosenthal <jrosenth@chromium.org>
Change-Id: I10917b76ff6c2a9d5a97d5c7dfa9e8925cd8c8a4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48676
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>

src/northbridge/amd/pi/Kconfig

@@ -29,7 +29,6 @@ config S3_VGA_ROM_RUN
 
 source "src/northbridge/amd/pi/00630F01/Kconfig"
 source "src/northbridge/amd/pi/00730F01/Kconfig"
-source "src/northbridge/amd/pi/00660F01/Kconfig"
 
 config HW_MEM_HOLE_SIZEK
 	hex

src/soc/intel/common/basecode/Kconfig

@@ -2,10 +2,3 @@ config SOC_INTEL_COMMON_BASECODE
 	bool
 	help
 	  Common coreboot stages and non-IP block for Intel platform
-
-if SOC_INTEL_COMMON_BASECODE
-
-source "src/soc/intel/common/basecode/*/Kconfig"
-source "src/soc/intel/common/basecode/*/*/Kconfig"
-
-endif