Apply 2to3 to clean code

[noviluni]

closes: #747

[codecov]

Codecov Report

Merging #748 into master will decrease coverage by 0.03%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #748      +/-   ##
==========================================
- Coverage   95.23%   95.20%   -0.04%     
==========================================
  Files         304      304              
  Lines        2646     2629      -17     
==========================================
- Hits         2520     2503      -17     
  Misses        126      126              

Impacted Files	Coverage Δ
dateparser/calendars/__init__.py	95.45% <ø> (-0.06%)	⬇️
dateparser/calendars/hijri_parser.py	89.74% <ø> (ø)
dateparser/calendars/jalali.py	100.00% <ø> (ø)
dateparser/calendars/jalali_parser.py	100.00% <ø> (ø)
dateparser/date_parser.py	100.00% <ø> (ø)
dateparser/languages/dictionary.py	99.32% <ø> (-0.01%)	⬇️
dateparser/search/__init__.py	100.00% <ø> (ø)
dateparser/search/search.py	98.05% <ø> (-0.02%)	⬇️
dateparser/search/text_detection.py	98.14% <ø> (-0.04%)	⬇️
dateparser/date.py	99.14% <100.00%> (-0.01%)	⬇️
... and 9 more

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[Gallaecio]

Unless you prefer to do it in a later changeset, this may be a good chance to get rid of these encoding comments as well.

And that way we don‘t need to discuss whether the empty lines between those and the first import line should be 1 or 2 🙂

[noviluni]

Yeah, this will be handled in another PR: #758 👍