(MAINT) Remove SLES 11 support

Ciaran McCrisken · Ciaran McCrisken · commit f7cd69b97cda · 2021-02-24T16:23:58.000Z
diff --git a/metadata.json b/metadata.json
@@ -66,7 +66,6 @@
     {
       "operatingsystem": "SLES",
       "operatingsystemrelease": [
-        "11",
         "12",
         "15"
       ]
