fix(test): do not run automatic WAL truncate during test

Remove the 2 minute timeout as the default is 2 hours and wouldn't
interfere. With the test. Otherwise the extra samples combined with
race detection can push the test over 2 minutes and make it fail.

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

tsdb/agent/db_test.go

@@ -488,7 +488,6 @@ func TestPartialTruncateWAL(t *testing.T) {
 	)
 
 	opts := DefaultOptions()
-	opts.TruncateFrequency = time.Minute * 2
 
 	reg := prometheus.NewRegistry()
 	s := createTestAgentDB(t, reg, opts)