Revert "switched to random execution for unit-tests"

This reverts commit 7b89535.

Author: dive

MobileOrg.xcodeproj/xcshareddata/xcschemes/MobileOrg.xcscheme

@@ -38,8 +38,7 @@
       </MacroExpansion>
       <Testables>
          <TestableReference
-            skipped = "NO"
-            testExecutionOrdering = "random">
+            skipped = "NO">
             <BuildableReference
                BuildableIdentifier = "primary"
                BlueprintIdentifier = "747BF9961DFD719400E800FB"