Revert "Workaround gomodjail concurrency issue"

This reverts commit 4039cfe.

Signed-off-by: Akihiro Suda <[email protected]>

Author: AkihiroSuda

hack/test-integration.sh

@@ -26,13 +26,6 @@ if [[ "$(id -u)" = "0" ]]; then
   fi
 fi
 
-# This is a temporary workaround for https://github.com/AkihiroSuda/gomodjail/issues/50
-# FIXME: remove this once above has been fixed.
-if command -v nerdctl.gomodjail >/dev/null 2>&1; then
-  # We do not care that it fails or succeeds - just need gomodjail to unpack once.
-  nerdctl.gomodjail info >/dev/null 2>&1 || true
-fi
-
 readonly timeout="60m"
 readonly retries="2"
 readonly needsudo="${WITH_SUDO:-}"