github: Remove obsolete LGTM workflow

lgtm.com will be shutdown soon.

scripts/test.sh

@@ -397,68 +397,6 @@ apidoc)
 	CONFIG="--disable-defaults"
 	TARGET=apidoc
 	;;
-lgtm)
-	if [ -z "$LGTM_PROJECT" -o -z "$LGTM_TOKEN" ]; then
-		echo "The LGTM_PROJECT and LGTM_TOKEN environment variables" \
-			 "are required to run this test"
-		exit 0
-	fi
-	DEPS="jq"
-	if test -z "$1"; then
-		base=$COMMIT_BASE
-		# after rebases or for new/duplicate branches, the passed base commit
-		# ID might not be valid
-		git rev-parse -q --verify $base^{commit}
-		if [ $? != 0 ]; then
-			# this will always compare against master, while via base we
-			# otherwise only contains "new" commits
-			base=$(git merge-base origin/master ${COMMIT_ID})
-		fi
-		base=$(git rev-parse $base)
-
-		echo "Starting code review for $COMMIT_ID (base $base) on lgtm.com"
-		git diff --binary $base > lgtm.patch || exit $?
-		curl -s -X POST --data-binary @lgtm.patch \
-			"https://lgtm.com/api/v1.0/codereviews/${LGTM_PROJECT}?base=${base}&external-id=${BUILD_NUMBER}" \
-			-H 'Content-Type: application/octet-stream' \
-			-H 'Accept: application/json' \
-			-H "Authorization: Bearer ${LGTM_TOKEN}" > lgtm.res || exit $?
-		lgtm_check_url=$(jq -r '."task-result-url"' lgtm.res)
-		if [ -z "$lgtm_check_url" -o "$lgtm_check_url" = "null" ]; then
-			cat lgtm.res
-			exit 1
-		fi
-		lgtm_url=$(jq -r '."task-result"."results-url"' lgtm.res)
-		echo "Progress and full results: ${lgtm_url}"
-
-		echo -n "Waiting for completion: "
-		lgtm_status=pending
-		while [ "$lgtm_status" = "pending" ]; do
-			sleep 15
-			curl -s -X GET "${lgtm_check_url}" \
-				-H 'Accept: application/json' \
-				-H "Authorization: Bearer ${LGTM_TOKEN}" > lgtm.res
-			if [ $? != 0 ]; then
-				echo -n "-"
-				continue
-			fi
-			echo -n "."
-			lgtm_status=$(jq -r '.status' lgtm.res)
-		done
-		echo ""
-
-		if [ "$lgtm_status" != "success" ]; then
-			lgtm_message=$(jq -r '.["status-message"]' lgtm.res)
-			echo "Code review failed: ${lgtm_message}"
-			exit 1
-		fi
-		lgtm_new=$(jq -r '.languages[].new' lgtm.res | awk '{t+=$1} END {print t}')
-		lgtm_fixed=$(jq -r '.languages[].fixed' lgtm.res | awk '{t+=$1} END {print t}')
-		echo -n "Code review complete: "
-		printf "%b\n" "\e[1;31m${lgtm_new}\e[0m new alerts, \e[1;32m${lgtm_fixed}\e[0m fixed"
-		exit $lgtm_new
-	fi
-	;;
 *)
 	echo "$0: unknown test $TEST" >&2
 	exit 1