erase a remove

std::remove's return value should be used to shrink a container after it
removes elements.

caught by clang-tidy:
/buildbot/src/googleplex-android/rvc-release/system/iorap/src/manager/event_manager.cc:550:7:
warning: the value returned by this function should be used
[bugprone-unused-return-value]

Bug: None
Test: TreeHugger
Change-Id: I97aacc44bd3e58fb9e82afa719ea23108cc9a034
1 file changed