(MAINT) Remove SLES 11 support

Ciaran McCrisken · Ciaran McCrisken · commit f6e1059cf25b · 2021-02-24T16:24:00.000Z
diff --git a/metadata.json b/metadata.json
@@ -44,7 +44,6 @@
     {
       "operatingsystem": "SLES",
       "operatingsystemrelease": [
-        "11",
         "12",
         "15"
       ]
