(MAINT) Remove SLES 11 support

Ciaran McCrisken · Ciaran McCrisken · commit f12bf4e18944 · 2021-02-24T16:23:57.000Z
diff --git a/metadata.json b/metadata.json
@@ -63,7 +63,6 @@
     {
       "operatingsystem": "SLES",
       "operatingsystemrelease": [
-        "11",
         "12",
         "15"
       ]
