travis: remove the hack to build the Windows job on Azure Pipelines

Since Travis did not support Windows (and now only supports very limited
Windows jobs, too limited for our use, the test suite would time out
*all* the time), we added a hack where a Travis job would trigger an
Azure Pipeline (which back then was still called VSTS Build), wait for
it to finish (or time out), and download the log (if available).

Needless to say that it was a horrible hack, necessitated by a bad
situation.

Nowadays, however, we have Azure Pipelines support, and do not need that
hack anymore. So let's retire it.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

.travis.yml

@@ -21,16 +21,6 @@ matrix:
       compiler:
       addons:
       before_install:
-    - env: jobname=Windows
-      os: linux
-      compiler:
-      addons:
-      before_install:
-      script:
-        - >
-          test "$TRAVIS_REPO_SLUG" != "git/git" ||
-          ci/run-windows-build.sh $TRAVIS_BRANCH $(git rev-parse HEAD)
-      after_failure:
     - env: jobname=Linux32
       os: linux
       compiler:

ci/run-windows-build.sh

@@ -1,103 +0,0 @@
-#!/usr/bin/env bash
-#
-# Script to trigger the Git for Windows build and test run.
-# Set the $GFW_CI_TOKEN as environment variable.
-# Pass the branch (only branches on https://github.com/git/git are
-# supported) and a commit hash.
-#
-
-. ${0%/*}/lib.sh
-
-test $# -ne 2 && echo "Unexpected number of parameters" && exit 1
-test -z "$GFW_CI_TOKEN" && echo "GFW_CI_TOKEN not defined" && exit
-
-BRANCH=$1
-COMMIT=$2
-
-gfwci () {
-	local CURL_ERROR_CODE HTTP_CODE
-	CONTENT_FILE=$(mktemp -t "git-windows-ci-XXXXXX")
-	while test -z $HTTP_CODE
-	do
-	HTTP_CODE=$(curl \
-		-H "Authentication: Bearer $GFW_CI_TOKEN" \
-		--silent --retry 5 --write-out '%{HTTP_CODE}' \
-		--output >(sed "$(printf '1s/^\xef\xbb\xbf//')" >$CONTENT_FILE) \
-		"https://git-for-windows-ci.azurewebsites.net/api/TestNow?$1" \
-	)
-	CURL_ERROR_CODE=$?
-		# The GfW CI web app sometimes returns HTTP errors of
-		# "502 bad gateway" or "503 service unavailable".
-		# We also need to check the HTTP content because the GfW web
-		# app seems to pass through (error) results from other Azure
-		# calls with HTTP code 200.
-		# Wait a little and retry if we detect this error. More info:
-		# https://docs.microsoft.com/en-in/azure/app-service-web/app-service-web-troubleshoot-http-502-http-503
-		if test $HTTP_CODE -eq 502 ||
-		   test $HTTP_CODE -eq 503 ||
-		   grep "502 - Web server received an invalid response" $CONTENT_FILE >/dev/null
-		then
-			sleep 10
-			HTTP_CODE=
-		fi
-	done
-	cat $CONTENT_FILE
-	rm $CONTENT_FILE
-	if test $CURL_ERROR_CODE -ne 0
-	then
-		return $CURL_ERROR_CODE
-	fi
-	if test "$HTTP_CODE" -ge 400 && test "$HTTP_CODE" -lt 600
-	then
-		return 127
-	fi
-}
-
-# Trigger build job
-BUILD_ID=$(gfwci "action=trigger&branch=$BRANCH&commit=$COMMIT&skipTests=false")
-if test $? -ne 0
-then
-	echo "Unable to trigger Visual Studio Team Services Build"
-	echo "$BUILD_ID"
-	exit 1
-fi
-
-# Check if the $BUILD_ID contains a number
-case $BUILD_ID in
-''|*[!0-9]*) echo "Unexpected build number: $BUILD_ID" && exit 1
-esac
-
-echo "Visual Studio Team Services Build #${BUILD_ID}"
-
-# Tracing execued commands would produce too much noise in the waiting
-# loop below.
-set +x
-
-# Wait until build job finished
-STATUS=
-RESULT=
-while true
-do
-	LAST_STATUS=$STATUS
-	STATUS=$(gfwci "action=status&buildId=$BUILD_ID")
-	test "$STATUS" = "$LAST_STATUS" || printf "\nStatus: %s " "$STATUS"
-	printf "."
-
-	case "$STATUS" in
-	inProgress|postponed|notStarted) sleep 10               ;; # continue
-		 "completed: succeeded") RESULT="success"; break;; # success
-		    "completed: failed")                   break;; # failure
-	*) echo "Unhandled status: $STATUS";               break;; # unknown
-	esac
-done
-
-# Print log
-echo ""
-echo ""
-set -x
-gfwci "action=log&buildId=$BUILD_ID" | cut -c 30-
-
-# Set exit code for TravisCI
-test "$RESULT" = "success"
-
-save_good_tree