MAINT: small changes to speed up find_MAP

[tirthasheshpatel]

Changes:

• removes un-necessary calls to bij.map.
• adds a new line after find_MAP finishes to avoid the progress bar to be overwritten (only if progressbar=True)

[codecov]

Codecov Report

Merging #3916 into master will increase coverage by 0.00%.
The diff coverage is 33.33%.

@@           Coverage Diff           @@
##           master    #3916   +/-   ##
=======================================
  Coverage   83.45%   83.45%           
=======================================
  Files         103      103           
  Lines       14178    14179    +1     
=======================================
+ Hits        11832    11833    +1     
  Misses       2346     2346           

Impacted Files	Coverage Δ
pymc3/tuning/starting.py	80.91% <33.33%> (+0.14%)	⬆️

[michaelosthege]

Looks tidier 👍

However they were just calling bij.map once, so it was not much of a performance loss.

[twiecki]

Thanks!