build: do not retry for connrefused (#3402)

* build: do not retry for connrefused

Signed-off-by: tison <wander4096@gmail.com>

* simplify layout

Signed-off-by: tison <wander4096@gmail.com>

---------

Signed-off-by: tison <wander4096@gmail.com>

scripts/fetch-dashboard-assets.sh

@@ -23,12 +23,7 @@ function retry_fetch() {
     local url=$1
     local filename=$2
 
-    curl \
-      --connect-timeout 10 \
-      --retry 3 \
-      --retry-connrefused \
-      -fsSL $url --output $filename || \
-      {
+    curl --connect-timeout 10 --retry 3 -fsSL $url --output $filename || {
         echo "Failed to download $url"
         echo "You may try to set http_proxy and https_proxy environment variables."
         if [[ -z "$GITHUB_PROXY_URL" ]]; then