phy: qcom-usb: Remove unused ulpi phy header

Ulpi phy header is not used for anything. Remove the same
from qcom-hs and qcom-hsic phy drivers.

Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
Suggested-by: Stephen Boyd <stephen.boyd@linaro.org>
Cc: Kishon Vijay Abraham I <kishon@ti.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-arm-msm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>