let's face it, empty gridlines are ugly. Here is how you can remove unwanted gridlines in Google Sheets. Wether you think they're distracting, or your just curious about how you can do it, this guide is for you!
Highlight the Range
Start off by highlighting the desired range you want to scrub of gridlines.

View -> Show -> Gridlines
Click on the view menu. Select Show and then click Gridlines.

Doing so will remove the gridlines from the selected range unless they were emboldened as seen in the spreadsheet.

That's really all there is to it. It is a really neat way to clean your spreadsheets and make them a lot more readable and easy on the eyes, much like hiding rows and columns.