tlv493d: disable test TestTLV493D_ReadContinous

It fails on CI with:
  panic: i2ctest: expected playback to be empty: I/O count 8; expected 9

tlv493d/tlv493d_test.go

@@ -130,6 +130,7 @@ func TestTLV493D_Read(t *testing.T) {
 }
 
 func TestTLV493D_ReadContinous(t *testing.T) {
+	t.Skip("this test has a race condition")
 	b := i2ctest.Playback{
 		Ops: []i2ctest.IO{
 			// Recovery