temp/android-tools: remove

The bug that caused us to fork this package has been resolved upstream.

Tested by downgrading FP2 bootloader to a version susceptible to this
bug:

~ # ./fastboot-31.0.0p1-r2 flash boot boot.img
fastboot: error: Couldn't parse partition size '0x'.
~ # ./fastboot-31.0.3p1-r4 flash boot boot.img
Sending 'boot' (11666 KB)                          OKAY [  0.367s]
Writing 'boot'                                     OKAY [  0.276s]
Finished. Total time: 0.670s

This android-tools version also doesn't build anymore, and blocks v22.06 bpo.