Fix tests

vault/core_test.go

@@ -2314,7 +2314,6 @@ func TestCore_HandleRequest_Headers(t *testing.T) {
 		Path:        "foo/test",
 		ClientToken: root,
 		Headers: map[string][]string{
-			"X-Vault-Kv-Client":                   []string{"foo"},
 			"Should-Passthrough":                  []string{"foo"},
 			"Should-Passthrough-Case-Insensitive": []string{"baz"},
 			"Should-Not-Passthrough":              []string{"bar"},
@@ -2328,16 +2327,6 @@ func TestCore_HandleRequest_Headers(t *testing.T) {
 	// Check the headers
 	headers := noop.Requests[0].Headers
 
-	// Test whitelisted values
-	if val, ok := headers["X-Vault-Kv-Client"]; ok {
-		expected := []string{"foo"}
-		if !reflect.DeepEqual(val, expected) {
-			t.Fatalf("expected: %v, got: %v", expected, val)
-		}
-	} else {
-		t.Fatalf("expected 'X-Vault-Kv-Client' to be present in the headers map")
-	}
-
 	// Test passthrough values
 	if val, ok := headers["Should-Passthrough"]; ok {
 		expected := []string{"foo"}