Fix generateEffectiveTLDs.php for MPL 2.0 licence block.

Got one small additional fix for you on top of the changes you already merged.  I don't know why Github thinks it needs to show you everything since ratelle's original fork again -- the only relevant change is the very last one, which makes `generateEffectiveTlds.php` understand the new MPL 2.0 licence block that the upstream effective_tld_names.dat has now, thus removing a whole bunch of junk comments from the generated effectiveTlds files.

I'll have another, more substantial set of changes for you probably next week, but this seemed like it wanted fixing now.