cmake: link libusb by its full path

pkg_check_modules gives both LIBUSB_LIBRARIES (bare names, -lusb-1.0) and
LIBUSB_LINK_LIBRARIES (absolute paths). Passing both links libusb twice,
and the bare name only resolves when libusb is in the default library
search path - which it is on Linux and is not under Homebrew on macOS,
where the link fails with "library not found for -lusb-1.0". The full
path alone is enough everywhere.

CMakeLists.txt

@@ -32,7 +32,6 @@ target_include_directories(${PROJECT_NAME} PUBLIC
 
 target_link_libraries(${PROJECT_NAME} PRIVATE
 	${GD_LIBRARIES}
-	${LIBUSB_LIBRARIES}
 	${LIBUSB_LINK_LIBRARIES}
 	${Intl_LIBRARIES}
 	${ARGP_LIBRARIES}