cleanup unused code

[jmue]

remove some unused code (maybee leftover of new androidx.core.content.FileProvider)

[nextcloud-android-bot]

Codacy

300

Lint

Type	master	PR
Warnings	57	57
Errors	0	0

SpotBugs (new)

Warning Type	Number
Bad practice Warnings	25
Correctness Warnings	80
Internationalization Warnings	15
Malicious code vulnerability Warnings	4
Multithreaded correctness Warnings	9
Performance Warnings	123
Security Warnings	47
Dodgy code Warnings	132
Total	435

SpotBugs (master)

Warning Type	Number
Bad practice Warnings	25
Correctness Warnings	80
Internationalization Warnings	15
Malicious code vulnerability Warnings	4
Multithreaded correctness Warnings	9
Performance Warnings	124
Security Warnings	47
Dodgy code Warnings	132
Total	436

[codecov]

Codecov Report

Merging #3899 into master will increase coverage by 0.12%.
The diff coverage is 0%.

@@             Coverage Diff             @@
##             master   #3899      +/-   ##
===========================================
+ Coverage      6.45%   6.57%   +0.12%     
  Complexity        1       1              
===========================================
  Files           325     320       -5     
  Lines         31247   30821     -426     
  Branches       4479    4397      -82     
===========================================
+ Hits           2018    2028      +10     
+ Misses        28931   28495     -436     
  Partials        298     298

Impacted Files	Coverage Δ	Complexity Δ
...main/java/com/owncloud/android/utils/UriUtils.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...c/main/java/com/nextcloud/client/di/AppModule.java	58.33% <0%> (-41.67%)	0% <0%> (ø)
.../third_parties/daveKoeller/AlphanumComparator.java	79.76% <0%> (-2.39%)	0% <0%> (ø)
...xtcloud/client/preferences/AppPreferencesImpl.java	34.02% <0%> (-0.73%)	0% <0%> (ø)
...va/com/owncloud/android/utils/FilesSyncHelper.java	26.78% <0%> (-0.65%)	0% <0%> (ø)
...wncloud/android/providers/FileContentProvider.java	18.68% <0%> (-0.22%)	0% <0%> (ø)
src/main/java/com/owncloud/android/MainApp.java	45.67% <0%> (-0.06%)	0% <0%> (ø)
...a/com/owncloud/android/utils/FileStorageUtils.java	7.96% <0%> (-0.04%)	0% <0%> (ø)
...com/owncloud/android/ui/activity/BaseActivity.java	1.35% <0%> (-0.02%)	0% <0%> (ø)
...m/owncloud/android/ui/adapter/TemplateAdapter.java	0% <0%> (ø)	0% <0%> (ø)	⬇️
... and 64 more

[tobiasKaminsky]

Nice, thanks for this finding!