What is the quickes way to delete spaces in front of each line?

Hi,

I lot of times I have text something like:

Sample:
----Lorem ipsum dolor sit amet,
--consectetur adipiscing elit,
--------sed do eiusmod tempor
---incididunt ut labore et dolore
---magna aliqua.

Note: Characters "-" symbolizes spaces.


I need to delete spaces in as quicker way as possible.

Now I do it with command "delete to character" and move down cursor like:
dtL
j
dtc
j
dts
j
dti
j
dtm

Is there a quicker way?

What would be nice is to have "some command" and then just use j. to move cursor down and repeat the command.

P.S. I know there is ed command: 1,5s/^\s\+// but this is difficult to type quickly and requires a lot of thinking. Using some normal command and repeating j. would be much simpler to think and edit.
Thanks

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