zsh-completion: remove bad test

I thought there was a bug in the boolSlice definition but it seems
It was my mistake in identifying what's going on. Also removed the
provisioning to skip tests (doesn't seem to be needed anymore).

zsh_completions_test.go

@@ -15,7 +15,6 @@ func TestGenZshCompletion(t *testing.T) {
 		name                string
 		root                *Command
 		expectedExpressions []string
-		skip                string
 	}{
 		{
 			name: "simple command",
@@ -112,18 +111,6 @@ func TestGenZshCompletion(t *testing.T) {
 				`'\(\*-d \*--debug\)'{\\\*-d,\\\*--debug}`,
 			},
 		},
-		{
-			name: "boolSlice should not accept arguments",
-			root: func() *Command {
-				r := genTestCommand("mycmd", true)
-				r.Flags().BoolSlice("verbose", []bool{}, "verbosity level")
-				return r
-			}(),
-			expectedExpressions: []string{
-				`'\*--verbose\[verbosity level]'`,
-			},
-			skip: "BoolSlice behaves strangely both with NoOptDefVal and type (identifies as bool)",
-		},
 	}
 
 	for _, tc := range tcs {
@@ -135,10 +122,6 @@ func TestGenZshCompletion(t *testing.T) {
 			}
 			output := buf.Bytes()
 
-			if tc.skip != "" {
-				t.Skip("Skipping:", tc.skip)
-			}
-
 			for _, expr := range tc.expectedExpressions {
 				rgx, err := regexp.Compile(expr)
 				if err != nil {