Remove icon_max_size from the sample config

sampleconfigs/config.sample.py

@@ -21,10 +21,6 @@ mvn3 = "mvn3"
 # Command for running Gradle (command or full path)
 gradle = "gradle"
 
-# Max height and width (in pixels) for the icons in the repo
-# This corresponds to 72x72 pixels, i.e. mdpi
-icon_max_size = 72
-
 # Set the maximum age (in days) of an index that a client should accept from
 # this repo. Setting it to 0 or not setting it at all disables this
 # functionality. If you do set this to a non-zero value, you need to ensure