Remove mTLS stuff from code

app_test.go

@@ -59,20 +59,3 @@ func (s *Suite) ResetDB(c *check.C) {
 	}
 	app.db = db
 }
-
-// Enusre an error is returned when an invalid auth mode
-// is supplied.
-func (s *Suite) TestInvalidClientAuthMode(c *check.C) {
-	_, isValid := LookupTLSClientAuthMode("invalid")
-	c.Assert(isValid, check.Equals, false)
-}
-
-// Ensure that all client auth modes return a nil error.
-func (s *Suite) TestAuthModes(c *check.C) {
-	modes := []string{"disabled", "relaxed", "enforced"}
-
-	for _, v := range modes {
-		_, isValid := LookupTLSClientAuthMode(v)
-		c.Assert(isValid, check.Equals, true)
-	}
-}