Remove I prefix from interface snippet

Author: MRmlik12

snippets/csharp.json

@@ -198,7 +198,7 @@
     "Interface": {
         "prefix": "interface",
         "body": [
-            "interface I${1:$TM_FILENAME_BASE}",
+            "interface ${1:$TM_FILENAME_BASE}",
             "{",
             "\t$0",
             "}"