remove dub workaround now that v1.11.0 is released

Author: MartinNowak

buildkite/build_project.sh

@@ -150,8 +150,6 @@ case "$REPO_FULL_NAME" in
     dlang/dub)
         rm test/issue895-local-configuration.sh # FIXME
         rm test/issue884-init-defer-file-creation.sh # FIXME
-        sed 's/"stdx-allocator": "2.77.0",/"stdx-allocator": "2.77.2",/' -i dub.selections.json # upgrade stdx-allocator (can be removed once v1.11 gets released)
-        rm test/ddox.sh # can be removed once v1.11 gets released
         sed -i '/^source.*activate/d' travis-ci.sh
         DC=$DC ./travis-ci.sh
         ;;