How to remove spaces in the beginning of lines with Notepad++?

Question

I'm working on a project and I need all the lines to be perfectly straight, some lines are fine but many look like this and I need to fix 3,000 of them without having to fix each line individually.

See example below

Flying fish flew by the space station.
    The hand sanitizer was actually clear glue.
I received a heavy fine but it failed to crush my spirit.
 He knew it was going to be a bad day when he saw mountain lions roaming the streets.
  Whenever he saw a red flag warning at the beach he grabbed his surfboard.

I want it to look like

Flying fish flew by the space station.
The hand sanitizer was actually clear glue.
I received a heavy fine but it failed to crush my spirit.
He knew it was going to be a bad day when he saw mountain lions roaming the streets.
Whenever he saw a red flag warning at the beach he grabbed his surfboard.

Google, couldn't find results for this

Answer 1

Use Menu => Edit => Blank Operations => Trim Leading Space.