usb: dwc3: Remove current_trb as it is unused
usb: dwc3: Remove current_trb as it is unused

This field was introduced but never used. So, remove it.

Signed-off-by: Amit Virdi <42efb79cb54bc4bc543789c72051a3fee59ac0b8@st.com>
Signed-off-by: Felipe Balbi <94dddeeef08b001e003cce128ddc162a4e2c6cd2@ti.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs