Remove legacy builds/ directory

builds/vpe-router/.build.manifest

builds/vpe-router/.gitignore

builds/vpe-router/Makefile

builds/vpe-router/README.md

builds/vpe-router/actions.yaml

builds/vpe-router/actions/add-corporation

builds/vpe-router/actions/configure-interface

builds/vpe-router/actions/connect-domains

builds/vpe-router/actions/delete-corporation

builds/vpe-router/actions/delete-domain-connection

builds/vpe-router/bin/layer_option

builds/vpe-router/config.yaml

builds/vpe-router/copyright

builds/vpe-router/deps/layer/layer-basic/.gitignore

builds/vpe-router/deps/layer/layer-basic/Makefile

builds/vpe-router/deps/layer/layer-basic/README.md

builds/vpe-router/deps/layer/layer-basic/bin/layer_option

builds/vpe-router/deps/layer/layer-basic/copyright

...ds/vpe-router/deps/layer/layer-basic/hooks/config-changed

builds/vpe-router/deps/layer/layer-basic/hooks/hook.template