Removed Buildings 8.1.x from the library testing (#77)

Author: casella

configs/conf.json

@@ -150,13 +150,6 @@
     "library":"BLDC",
     "libraryVersionNameForTests":""
   },
-  {
-    "library":"Buildings",
-    "ignoreModelPrefix":"Buildings.Utilities.IO.BCVTB.Examples",
-    "libraryVersionNameForTests":"8",
-    "libraryVersion":"maint.8.1.x",
-    "libraryVersionLatestInPackageManager":true
-  },
   {
     "library":"Buildings",
     "ignoreModelPrefix":"Buildings.Utilities.IO.BCVTB.Examples",