CI: Drop non-functional Clear Linux

Author: luke-jr

.github/workflows/build.yaml

@@ -22,7 +22,6 @@ jobs:
           - oraclelinux:9
           - alpine:latest
           - archlinux:latest
-          - clearlinux:latest
           - gentoo/stage3:musl-hardened
           - gentoo/stage3:hardened
         config:
@@ -81,13 +80,6 @@ jobs:
               PACKAGES="git base-devel cmake curl jansson libsodium"
               PACKAGES_API="libmicrohttpd"
               ;;
-            clearlinux:*)
-              INSTALL_CMD="swupd bundle-add"
-              PACKAGES="git c-basic devpkg-curl devpkg-jansson devpkg-libsodium"
-              PACKAGES_API="devpkg-libmicrohttpd"
-              PACKAGES_CLANG="llvm"
-              PACKAGES_GCC=''  # included in c-basic
-              ;;
             gentoo/*)
               PKG_CACHE_DIR='/var/cache/binpkgs'
               INIT_CMD='