Remove dependency on opensearch build repo libs from custom build.sh (o…

…pensearch-project#2033)

Signed-off-by: Peter Zhu <[email protected]>

scripts/build.sh

@@ -10,8 +10,6 @@
 set -ex
 
 # vars / libs
-SCRIPT_DIR=`dirname $(realpath $0)`
-. $SCRIPT_DIR/../../../lib/shell/file_management.sh
 PLUGIN_NAME=$(basename "$PWD")
 PLUGIN_PATH=`realpath ../OpenSearch-Dashboards/plugins/$PLUGIN_NAME`
 
@@ -30,7 +28,7 @@ function usage() {
 
 
 function cleanup_all() {
-    File_Delete $PLUGIN_PATH
+    rm -rf -- $PLUGIN_PATH
 }
 
 trap cleanup_all TERM INT EXIT
@@ -104,4 +102,4 @@ echo "BUILD RELEASE ZIP FOR $PLUGIN_NAME"
 cd plugins/$PLUGIN_NAME; yarn $HELPER_STRING build --opensearch-dashboards-version=$VERSION$QUALIFIER_IDENTIFIER
 cd $CURR_DIR
 echo "COPY $PLUGIN_NAME.zip"
-cp -r ../OpenSearch-Dashboards/plugins/$PLUGIN_NAME/build/$PLUGIN_NAME-$VERSION$QUALIFIER_IDENTIFIER.zip $OUTPUT/plugins/
+cp -r ../OpenSearch-Dashboards/plugins/$PLUGIN_NAME/build/$PLUGIN_NAME-$VERSION$QUALIFIER_IDENTIFIER.zip $OUTPUT/plugins/