chore: temporarily stop using maven mirror (#3816)

#3814 (comment)

Author: mpeddada1

.kokoro/presubmit/downstream-build.sh

@@ -25,10 +25,6 @@ scriptDir=$(realpath "$(dirname "${BASH_SOURCE[0]}")")
 cd "${scriptDir}/../.." # git repo root
 source "$scriptDir/common.sh"
 
-# Use GCP Maven Mirror
-mkdir -p "${HOME}/.m2"
-cp settings.xml "${HOME}/.m2"
-
 # Publish this repo's modules to local maven to make them available for downstream libraries
 mvn install --projects '!gapic-generator-java' \
  -Danimal.sniffer.skip \

settings.xml

@@ -18,15 +18,15 @@
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
  https://maven.apache.org/xsd/settings-1.0.0.xsd">
- <mirrors>
- <mirror>
- <!-- Google's Maven Central mirror for Americas
- https://maven-central.storage.googleapis.com/index.html
- -->
- <id>google-maven-central</id>
- <name>GCS Maven Central mirror</name>
- <url>https://maven-central.storage-download.googleapis.com/maven2/</url>
- <mirrorOf>central</mirrorOf>
- </mirror>
- </mirrors>
-</settings>
+<!-- <mirrors>-->
+<!-- <mirror>-->
+<!-- &lt;!&ndash; Google's Maven Central mirror for Americas-->
+<!-- https://maven-central.storage.googleapis.com/index.html-->
+<!-- &ndash;&gt;-->
+<!-- <id>google-maven-central</id>-->
+<!-- <name>GCS Maven Central mirror</name>-->
+<!-- <url>https://maven-central.storage-download.googleapis.com/maven2/</url>-->
+<!-- <mirrorOf>central</mirrorOf>-->
+<!-- </mirror>-->
+<!-- </mirrors>-->
+</settings>