modules: hal_nxp: removing always empty zephyr_library
modules: hal_nxp: removing always empty zephyr_library

No sources were ever added to the `zephyr_library()` defined in
modules/hal_nxp/usb/CMakeLists.txt, thus removing this lib to avoid
the warning:

> No SOURCES given to Zephyr library: modules__hal_nxp__usb
>
> Excluding target from build.

Signed-off-by: Torsten Rasmussen <a7c5b1d5a1f41fce6edfa3f7c2392ae0c59deafe@nordicsemi.no>

finikorg/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,galak/zephyr,finikorg/zephyr,galak/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,galak/zephyr,finikorg/zephyr