Remove the two last badges from the README

They're already proudly displayed on gitlab: https://gitlab.com/OpenMW/openmw

README.md

@@ -1,8 +1,6 @@
 OpenMW
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-[![Coverity Scan Build Status](https://scan.coverity.com/projects/3740/badge.svg)](https://scan.coverity.com/projects/3740) [![pipeline status](https://gitlab.com/OpenMW/openmw/badges/master/pipeline.svg)](https://gitlab.com/OpenMW/openmw/commits/master)
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 OpenMW is an open-source game engine that supports playing Morrowind by Bethesda Softworks. You need to own the game for OpenMW to play Morrowind.
 
 OpenMW also comes with OpenMW-CS, a replacement for Bethesda's Construction Set.