Update LCD.py

[perspector]

Removed default display pins on line 48 (different between esp32 and esp8266), set default columns to 8 in line 49, and fixed a typo (changed lines to rows) on line 60.

[rdagger]

Thank you for your pull request. I see you've adjusted some of the default constructor parameters, likely to better suit your use case. However, because these parameters are only defaults, they’re designed to work for a broad range of users and can be easily overridden when initializing the library. Changing them in the core code could impact other users without adding significant benefit.

The typo in the comments regarding lines is a good catch.