ci: remove stale code for Azure Pipelines

Support for Azure Pipelines has been retired in 6081d3898f (ci: retire
the Azure Pipelines definition, 2020-04-11) in favor of GitHub Actions.
Our CI library still has some infrastructure left for Azure though that
is now unused. Remove it.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

ci/lib.sh

@@ -206,26 +206,7 @@ export TERM=${TERM:-dumb}
 # Clear MAKEFLAGS that may come from the outside world.
 export MAKEFLAGS=
 
-if test -n "$SYSTEM_COLLECTIONURI" || test -n "$SYSTEM_TASKDEFINITIONSURI"
-then
-	CI_TYPE=azure-pipelines
-	# We are running in Azure Pipelines
-	CI_BRANCH="$BUILD_SOURCEBRANCH"
-	CI_COMMIT="$BUILD_SOURCEVERSION"
-	CI_JOB_ID="$BUILD_BUILDID"
-	CI_JOB_NUMBER="$BUILD_BUILDNUMBER"
-	CI_OS_NAME="$(echo "$AGENT_OS" | tr A-Z a-z)"
-	test darwin != "$CI_OS_NAME" || CI_OS_NAME=osx
-	CI_REPO_SLUG="$(expr "$BUILD_REPOSITORY_URI" : '.*/\([^/]*/[^/]*\)$')"
-	CC="${CC:-gcc}"
-
-	# use a subdirectory of the cache dir (because the file share is shared
-	# among *all* phases)
-	cache_dir="$HOME/test-cache/$SYSTEM_PHASENAME"
-
-	GIT_TEST_OPTS="--write-junit-xml"
-	JOBS=10
-elif test true = "$GITHUB_ACTIONS"
+if test true = "$GITHUB_ACTIONS"
 then
 	CI_TYPE=github-actions
 	CI_BRANCH="$GITHUB_REF"

ci/print-test-failures.sh

@@ -39,11 +39,6 @@ do
 		test_name="${test_name##*/}"
 		trash_dir="trash directory.$test_name"
 		case "$CI_TYPE" in
-		azure-pipelines)
-			mkdir -p failed-test-artifacts
-			mv "$trash_dir" failed-test-artifacts
-			continue
-			;;
 		github-actions)
 			mkdir -p failed-test-artifacts
 			echo "FAILED_TEST_ARTIFACTS=${TEST_OUTPUT_DIRECTORY:t}/failed-test-artifacts" >>$GITHUB_ENV