pd: Remove unneeded code from anx74xx.c tcpc driver
pd: Remove unneeded code from anx74xx.c tcpc driver

Remove unneeded mask from variable

BUG=b:122109575
BRANCH=none
TEST=manual

Change-Id: I257233f73db4f76dc251814cde88ea38eaffef88
Signed-off-by: Sam Hurst <500b4cddcd66abe3fe333e92c4c95d7f41e62e4e@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1401122
Commit-Ready: ChromeOS CL Exonerator Bot <fa429e5907f00867f797423aea74327bb02c91b6@appspot.gserviceaccount.com>
Tested-by: Sam Hurst <500b4cddcd66abe3fe333e92c4c95d7f41e62e4e@google.com>
Reviewed-by: Daisuke Nojiri <fd5f93af191bf7e8f73ea71cc3c0f66b41b1dd49@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec