Remove obsolete USB component workaround for esp_tinyusb

The workaround was trying to access the 'usb' component during CMake
configuration, but in newer ESP-IDF versions this component doesn't
exist as a built-in and must come from component manager.

Now that we're pulling usb from component manager via idf_component.yml,
the esp_tinyusb component should handle its USB dependencies correctly
without manual linking intervention.

Author: RobertDaleSmith

esp/main/CMakeLists.txt

@@ -9,10 +9,3 @@ idf_component_register(SRCS "usb_dfu.c" "ble_hid.c" "transport_hid.c" "transport
                                     "mouthpad-proto/nanopb"
                                     "mouthpad-proto/src/C"
                        REQUIRES bt esp_hid nvs_flash esp_driver_uart usb)
-
-# Workaround for esp_tinyusb v2.0.1 bug: CMakeLists.txt has backwards logic for IDF 6.0
-# It only adds "usb" component for IDF < 6, but IDF 6.0+ is what requires it
-# Force esp_tinyusb to link against usb component
-idf_component_get_property(esp_tinyusb_lib espressif__esp_tinyusb COMPONENT_LIB)
-idf_component_get_property(usb_lib usb COMPONENT_LIB)
-target_link_libraries(${esp_tinyusb_lib} PRIVATE ${usb_lib})