Remove omcounterdata.txt as redundant

Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com>

model/textparse/benchmark_test.go

@@ -86,8 +86,6 @@ func BenchmarkParse(b *testing.B) {
 		// NHCB.
 		{dataFile: "omhistogramdata.txt", parser: "omtext"},           // Measure OM parser baseline for histograms.
 		{dataFile: "omhistogramdata.txt", parser: "nhcb_over_omtext"}, // Measure NHCB over OM parser.
-		{dataFile: "omcounterdata.txt", parser: "omtext"},             // Measure OM parser baseline for counters.
-		{dataFile: "omcounterdata.txt", parser: "nhcb_over_omtext"},   // Measure NHCB over OM parser.
 	} {
 		var buf []byte
 		dataCase := bcase.dataFile

model/textparse/testdata/omcounterdata.txt

@@ -1,9 +0,0 @@
-# HELP rpc_requests Total number of RPC requests received.
-# TYPE rpc_requests counter
-rpc_requests_total{service="exponential"} 22.0
-rpc_requests_created{service="exponential"} 1.726839813016893e+09
-rpc_requests_total{service="normal"} 15.0
-rpc_requests_created{service="normal"} 1.726839813016717e+09
-rpc_requests_total{service="uniform"} 11.0
-rpc_requests_created{service="uniform"} 1.7268398130168471e+09
-# EOF