Switch to tape/reel part number for '244 buffer

Signed-off-by: Charles Steinkuehler <charles@steinkuehler.net>
Delete temporary 3x2 pin header
...used as size reference for possibly adding back 3-pin header
for 7805 style footprint for 5V switching regulator

Signed-off-by: Charles Steinkuehler <charles@steinkuehler.net>
Continued post-autorouter PCB cleanup

Signed-off-by: Charles Steinkuehler <charles@steinkuehler.net>
Merge with master