build-configs: riscv: drop defconfig filter

The build failures on riscv when CONFIG_EFI have been fixed for a long
time, remove this filter.

This filter was also preventing all of the other upstream defconfigs
in arch/riscv/defconfig from being built, so we'll now get build
coverage for those as well.

Signed-off-by: Kevin Hilman <[email protected]>

Author: khilman

config/core/build-configs.yaml

@@ -506,10 +506,6 @@ arch_clang_configs: &arch_clang_configs
   riscv:
     extra_configs: &riscv_clang_configs
       - 'allnoconfig'
-      - 'defconfig+CONFIG_EFI=n'
-    filters:
-      - passlist:
-          defconfig: *riscv_clang_configs
 
 # Minimum architecture defconfigs
 arch_defconfigs: &arch_defconfigs