Generalized test cases

Author: liammclennan

src/SeqCli/Cli/Commands/Bench/BenchCases.json

@@ -10,21 +10,11 @@
       "query": "select count(*) from stream where @Message like '%abcde'",
       "signals": []
     },
-    {
-      "id": "mean-filter",
-      "query": "select mean(RowCount) from stream where  @EventType = 0x94002EBF",
-      "signals": []
-    },
     {
       "id": "without-signal",
       "query": "select count(*) from stream where @Level = 'Warning'",
       "signals": []
     },
-    {
-      "id": "with-signal",
-      "query": "select count(*) from stream where @Level = 'Warning'",
-      "signals": ["signal-m33302"]
-    },
     {
       "id": "property-match",
       "query": "select count(*) from stream where Action = 'ListAsync'",