Removed eroneous submodule instructions from README

Author: julianharty

README

@@ -10,9 +10,6 @@ Quick start:
     git clone https://github.com/jech/galene
     cd galene
 
-    git submodule init
-    git submodule update
-
     CGO_ENABLED=0 go build -ldflags='-s -w'
     mkdir groups
     echo '{"users": {"bob": {"password":"secret", "permissions":"op"}}}' > \