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>