usb: dwc3-msm: Remove print for interrupts in perf_vote_work

After enabling dynamic debug, there's excessive logging from
this particular print. Remove this print as this complicates
debugging and also hogs the CPU dmesg buffer.

Change-Id: I2ac30469bd24860af6041d40892ec029a4c2958c
Signed-off-by: Harsh Agarwal <harshq@codeaurora.org>