Simplify environment checks

- Remove Old Arm environment check prior to moving to Linaro
- In migration and in Linaro OpenCI, environment difference
  is only in staging or production site.

Change-Id: Ib2c1bf786b67f354caeb5b3668649c922835cd0f
Signed-off-by: Saheer Babu <saheer.babu@arm.com>
diff --git a/utils.sh b/utils.sh
index e668753..8a28e64 100644
--- a/utils.sh
+++ b/utils.sh
@@ -22,16 +22,10 @@
 if [ -n "$host_env" ]; then
   source "$host_env"
 else
-  # Are we running on Arm infrastructure?
-  if echo "$JENKINS_PUBLIC_URL" | grep -q "oss.arm.com"; then
-    source "$ci_root/arm-env.sh"
-  elif echo "$JENKINS_PUBLIC_URL" | grep -q "jenkins.openci"; then
-    # This is Arm infrastructure while migration from ci.trustedfirmware.org
+  if echo "$JENKINS_PUBLIC_URL" | grep -q "staging"; then
+	source "$ci_root/openci-staging-env.sh"
+  else
     source "$ci_root/openci-env.sh"
-  elif echo "$JENKINS_PUBLIC_URL" | grep -q "ci.trustedfirmware.org"; then
-    source "$ci_root/openci-env.sh"
-  elif echo "$JENKINS_PUBLIC_URL" | grep -q "ci.staging.trustedfirmware.org"; then
-    source "$ci_root/openci-staging-env.sh"
   fi
 fi