UPSTREAM: usb: dwc2: gadget: Remove unnecessary line

UPSTREAM: usb: dwc2: gadget: Remove unnecessary line

Removed "ctrl |= DXEPCTL_USBACTEP" from
dwc2_hsotg_start_req() function because this
step is done in dwc2_hsotg_ep_enable().

Change-Id: I9675b30e1849c4f9d1ee099df44023dda8b5cf13
Tested-by: John Keeping <john@metanate.com>
Signed-off-by: Vardan Mikayelyan <mvardan@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Huang, Tao <huangtao@rock-chips.com>
(cherry picked from commit 04cde4787d8d9c56bd7b0bc5ee15af4435275134)