Remove print statement in MandatoryBracesLoops

[schalkms]

This spams the console and shouldn't be used in productive code.
Thus, I removed the unnecessary statement altogether.

[codecov]

Codecov Report

Merging #2664 into master will increase coverage by 0.01%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #2664      +/-   ##
============================================
+ Coverage     79.97%   79.98%   +0.01%     
  Complexity     2303     2303              
============================================
  Files           380      380              
  Lines          6771     6770       -1     
  Branches       1225     1224       -1     
============================================
  Hits           5415     5415              
  Misses          740      740              
+ Partials        616      615       -1     

Impacted Files	Coverage Δ	Complexity Δ
...etekt/rules/style/optional/MandatoryBracesLoops.kt	75.00% <ø> (+5.76%)	11.00 <0.00> (ø)

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