refactor: less user messages

mygb.sh

@@ -112,7 +112,7 @@ _get_project_info() {
 }
 
 _schedule_project_export() {
-  _api POST "projects/${project_url_encoded}/export" | jq | grep "202 Accepted" \
+  _api POST "projects/${project_url_encoded}/export" | jq | grep --silent "202 Accepted" \
     || _fail "Can't schedule export for project [${project}]"
 }
 
@@ -125,13 +125,11 @@ _wait_export_finished() {
     echo "Waiting end of export ..."
     sleep ${WAITING_TIME}
   done
-  echo "Export status of project [${project}] is $(_project_export_status)"
 }
 
 _export() {
   _load_config
 
-  echo "My GitLab projects :"
   _schedule_project_export
   _wait_export_finished
   _succed "Export done"
@@ -149,7 +147,6 @@ main() {
   shift
 
   while getopts c:p:g:ah flag; do
-    echo "Flag is ${flag}"
 
     # shellcheck disable=SC2034
     case "${flag}" in