USB detection unstable, remove use to avoid ~5 hour battery life on V3.

[GuruSR]

Due to the ESP32S3 causing the USB detection (and other pins) to become "HIGH" on boot for ~500ms, the test to see if the unit is plugged in will always say "1" (True, "HIGH"). Upon deep sleep, the test if the USB was plugged in will ask for the USB detection pin to be "LOW" as a Wake from Deep Sleep signal. When the ESP32S3 enters Deep Sleep, the USB detection pin will be "LOW" and the ESP32S3 will wake up again and repeat this process all over again.

Comment this line out (102 in Watchy.cpp) or expect a ~5 hour battery life:

Watchy/src/Watchy.cpp

Line 102 in 9f3accd

esp_sleep_enable_ext0_wakeup((gpio_num_t)USB_DET_PIN, USB_PLUGGED_IN ? LOW : HIGH); //// enable deep sleep wake on USB plug in/out

This was a thought I had to check the battery charge indicator, but found out that this caused repeated wake ups non-stop, once I was able to physically test it. This sense line is unusable until after ~500ms from wake up, making it impractical.