How to remove space between code and editor's left side

Recently, when I created a new script and saved it as a Matlab code file, I realized that all the lines of my code start with an indentation wich I can't get rid of. The image below shows the problem. I have already tried turning the Smart Indent on and off and decreasing the code's indentation, none of that worked.

Answer 1

[Mario Malic]

I think that's default, I have just checked options, and there is not such option to reduce that "whitespace", which exists, I believe for visual reasons.

[Steven Lord]

That whitespace also contains the code folding indicators, as you can see from lines 24-27 in the picture.