ci: Don't retry the s390x job

We no longer use the flaky qemu-system runner, so there shouldn't be any need to keep the retry. (backport <#4776>) (cherry picked from commit bad4627)

Author: tgross35

ci/run.sh

@@ -25,39 +25,9 @@ case "$target" in
  *) cmd="$cmd --workspace" ;;
 esac
 
-if [ "$target" = "s390x-unknown-linux-gnu" ]; then
- # FIXME: s390x-unknown-linux-gnu often fails to test due to timeout,
- # so we retry this N times.
- N=5
- n=0
- passed=0
- until [ $n -ge $N ]; do
- if [ "$passed" = "0" ]; then
- # shellcheck disable=SC2086
- if $cmd --no-default-features -- $test_flags; then
- passed=$((passed + 1))
- continue
- fi
- elif [ "$passed" = "1" ]; then
- # shellcheck disable=SC2086
- if $cmd -- $test_flags; then
- passed=$((passed + 1))
- continue
- fi
- elif [ "$passed" = "2" ]; then
- # shellcheck disable=SC2086
- if $cmd --features extra_traits -- $test_flags; then
- break
- fi
- fi
- n=$((n + 1))
- sleep 1
- done
-else
- # shellcheck disable=SC2086
- $cmd --no-default-features -- $test_flags
- # shellcheck disable=SC2086
- $cmd -- $test_flags
- # shellcheck disable=SC2086
- $cmd --features extra_traits -- $test_flags
-fi
+# shellcheck disable=SC2086
+$cmd --no-default-features -- $test_flags
+# shellcheck disable=SC2086
+$cmd -- $test_flags
+# shellcheck disable=SC2086
+$cmd --features extra_traits -- $test_flags