remove trailing whitespace

Author: dhalbert

0x50-0x5F.md

@@ -18,7 +18,6 @@
 - [Adafruit Mini I2C Gamepad with seesaw](https://www.adafruit.com/product/5743) (0x50 - 0x53)
 - [MB85RC FRAM](https://www.adafruit.com/product/1895) (0x50 - 0x57)
 - [Nintendo Nunchuck Controller](https://www.adafruit.com/product/342) (0x52 only)
-  
 ## 0x53
 
 - [Adafruit Mini I2C Gamepad with seesaw](https://www.adafruit.com/product/5743) (0x50 - 0x53)