Remove deprecated standards

This is feasible as we are releasing the next major version of this pacakge
anyway. (See previous commit.)

Author: Dan Wallis

composer.json

@@ -15,7 +15,6 @@
     },
     "autoload": {
         "psr-0": {
-            "MediactMagento2": "src/MediactMagento2",
             "YouweMagento2": "src/YouweMagento2"
         }
     }