Remove Arduino IDE and documentation files.

This removal is only to provide us a lightweight branch to checkout and
build against.
Removing binaries and the "sam" folder.

This removal is only to provide us a lightweight branch to checkout and
build against.
Remove audio library.
Remove bridge library.
Remove esplora library.
Remove ethernet library.
Remove firmata library.
Remove GSM library.
Remove LiquidCrystal library.
Remove Robot Control library.
Remove Robot IR Remote library.
Remove Robot Motor library.
Remove scheduler library.
Remove servo library.
Remove SpacebrewYun library.
Remove stepper library.
Remove temboo library.
Remove TFT library.
Remove USB host library.
Remove WiFi library.