remove Linux 2 compatibility code

Author: mnecchi

config/plugin/spot_termination.sh

@@ -4,22 +4,13 @@ OK=0
 NONOK=1
 UNKNOWN=2
 
-# Try to get IMDSv2 token (for AL2023)
 TOKEN=$(curl -X PUT "http://169.254.169.254/latest/api/token" \
   -H "X-aws-ec2-metadata-token-ttl-seconds: 21600" \
   --max-time 3 --silent --fail 2>/dev/null)
 
-# Check spot termination notice
-if [ -n "$TOKEN" ]; then
-    # Use IMDSv2 if token was obtained (AL2023)
-    status_code=$(curl --max-time 3 --silent --output /dev/stderr --write-out "%{http_code}" \
-      -H "X-aws-ec2-metadata-token: $TOKEN" \
-      "http://169.254.169.254/latest/meta-data/spot/instance-action")
-else
-    # Fall back to IMDSv1 (Linux 2)
-    status_code=$(curl --max-time 3 --silent --output /dev/stderr --write-out "%{http_code}" \
-      "http://169.254.169.254/latest/meta-data/spot/instance-action")
-fi
+status_code=$(curl --max-time 3 --silent --output /dev/stderr --write-out "%{http_code}" \
+    -H "X-aws-ec2-metadata-token: $TOKEN" \
+    "http://169.254.169.254/latest/meta-data/spot/instance-action")
 
 if [ "${status_code}" -eq "404" ]; then
     exit $OK