Remove off importing android util

[chao2zhang]

This is to make XmlReportMerger work for projects not targeting Android

[codecov]

Codecov Report

Merging #3506 (ed4e3a0) into master (da6c969) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##             master    #3506   +/-   ##
=========================================
  Coverage     77.56%   77.56%           
  Complexity     2804     2804           
=========================================
  Files           461      461           
  Lines          8668     8669    +1     
  Branches       1676     1676           
=========================================
+ Hits           6723     6724    +1     
  Misses         1040     1040           
  Partials        905      905           

Impacted Files	Coverage Δ	Complexity Δ
...gitlab/arturbosch/detekt/report/XmlReportMerger.kt	90.90% <100.00%> (+0.43%)	5.00 <0.00> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update da6c969...ed4e3a0. Read the comment docs.