Remove transpiler-related tutorial

[alecandido]

The transpiler has been moved to Qibo a while ago, so I'd consider this a leftover. In
case there is something to be moved before dropping here (or right after) let's do it
quickly, or otherwise postpone it until it will be relevant (i.e. let's not block the
update of Qibolab behind the update of Qibo, since having two outdated docs is worse
than a single one).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (1723585) 62.54% compared to head (c1596a3) 62.54%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #763   +/-   ##
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  Coverage   62.54%   62.54%           
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  Files          47       47           
  Lines        5882     5882           
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  Hits         3679     3679           
  Misses       2203     2203           

Flag	Coverage Δ
unittests	62.54% <ø> (ø)

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[stavros11]

Thanks @alecandido. I agree with removing, I would just prefer to open a PR copying this in Qibo before merging, so that it does not get lost in the abyss. Unless it is already there. I can have a look and do it.

[stavros11]

I had a look in Qibo and there is already an example about how to modify the transpiler, so no need to move anything there. However, the tutorial here also talks about how to modify the compiler and plug it to the QibolabBackend which is not covered in Qibo and is still part of qibolab code. Therefore, I would only remove the transpiler part and keep the rest, maybe modifying the title and the text a bit.

@alecandido I can do it pushing to this branch, if you agree.

[alecandido]

I had a look in Qibo and there is already an example about how to modify the transpiler, so no need to move anything there.

Sorry: I actually already had a look yesterday, so I knew it (I could have written in the OP).

However, the tutorial here also talks about how to modify the compiler and plug it to the QibolabBackend which is not covered in Qibo and is still part of qibolab code. Therefore, I would only remove the transpiler part and keep the rest, maybe modifying the title and the text a bit.

@alecandido I can do it pushing to this branch, if you agree.

If you wish, that's fine. Just change the name of the file and title with the substitution transpiler -> compiler, and truncate the transpiler-specific part.

[stavros11]

@alecandido I did some modifications so that the tutorial focuses on the compiler that is still in qibolab. If you agree, feel free to merge.