tests: remove invalid case

Author: ldez

internal/holsterv4/clock/rfc822_test.go

@@ -174,7 +174,6 @@ func TestParseRFC822Time(t *testing.T) {
 		{"Wed, November 03 2021 17:48:06 CST"},
 
 		// Timestamps without seconds.
-		{"Sun, 31 Oct 2021 12:10 -5000"},
 		{"Thu, 3 Jun 2021 12:01 MST"},
 		{"Thu, 3 Jun 2021 12:01 -0700"},
 		{"Thu, 3 Jun 2021 12:01 -0700 (MST)"},