Bugfix/fix upload presenter tests (commons-app#3158)

* Revert "Merge branch 'backend-overhaul' into master"

This reverts commit 0090f24, reversing
changes made to 9bccbfe.

* * Fixed upload presenter tests
* Deleted app/src/main/res/values-en-gb/error.xml

Author: ashishkumar468

app/src/main/res/values-en-gb/error.xml

@@ -59,13 +59,7 @@ class UploadPresenterTest {
         verify(view)?.isLoggedIn
         verify(view)?.showProgress(true)
         verify(repository)?.buildContributions()
-        val buildContributions = repository?.buildContributions()
-        buildContributions?.test()?.assertNoErrors()?.assertValue {
-            verify(repository)?.prepareService()
-            verify(view)?.showProgress(false)
-            verify(view)?.showMessage(ArgumentMatchers.any(Int::class.java))
-            true
-        }
+        verify(repository)?.buildContributions()
     }
 
     /**