minified_js.py: Remove dead code used for handling js minification.
minified_js.py: Remove dead code used for handling js minification.

This piece of code was used when we used Django template engine. Since
we moved to Jinja2 template engine, we wrote a newer version of this
function (minified_js) in 'zproject/jinja2/compressors.py' which is
now used in our templates. This newer function essentially retired the
old function defination and thus the old code became dead. We probably
missed out this clean up at the time we migrated to Jinja2 template
engine.

rht/zulip,rishig/zulip,shubhamdhama/zulip,rht/zulip,timabbott/zulip,synicalsyntax/zulip,timabbott/zulip,jackrzhang/zulip,eeshangarg/zulip,eeshangarg/zulip,timabbott/zulip,synicalsyntax/zulip,eeshangarg/zulip,andersk/zulip,jackrzhang/zulip,brainwane/zulip,showell/zulip,eeshangarg/zulip,tommyip/zulip,hackerkid/zulip,brainwane/zulip,dhcrzf/zulip,rishig/zulip,synicalsyntax/zulip,andersk/zulip,dhcrzf/zulip,rht/zulip,brainwane/zulip,synicalsyntax/zulip,brainwane/zulip,synicalsyntax/zulip,rht/zulip,rht/zulip,dhcrzf/zulip,dhcrzf/zulip,showell/zulip,jackrzhang/zulip,showell/zulip,zulip/zulip,zulip/zulip,eeshangarg/zulip,dhcrzf/zulip,punchagan/zulip,punchagan/zulip,shubhamdhama/zulip,jackrzhang/zulip,punchagan/zulip,andersk/zulip,hackerkid/zulip,zulip/zulip,tommyip/zulip,synicalsyntax/zulip,dhcrzf/zulip,shubhamdhama/zulip,zulip/zulip,rishig/zulip,dhcrzf/zulip,kou/zulip,hackerkid/zulip,timabbott/zulip,tommyip/zulip,eeshangarg/zulip,shubhamdhama/zulip,tommyip/zulip,jackrzhang/zulip,rishig/zulip,rht/zulip,showell/zulip,tommyip/zulip,andersk/zulip,brainwane/zulip,kou/zulip,hackerkid/zulip,kou/zulip,eeshangarg/zulip,brainwane/zulip,showell/zulip,shubhamdhama/zulip,hackerkid/zulip,andersk/zulip,rishig/zulip,zulip/zulip,tommyip/zulip,rishig/zulip,andersk/zulip,punchagan/zulip,hackerkid/zulip,synicalsyntax/zulip,punchagan/zulip,punchagan/zulip,shubhamdhama/zulip,hackerkid/zulip,zulip/zulip,zulip/zulip,tommyip/zulip,kou/zulip,brainwane/zulip,showell/zulip,jackrzhang/zulip,timabbott/zulip,andersk/zulip,kou/zulip,shubhamdhama/zulip,rht/zulip,timabbott/zulip,showell/zulip,timabbott/zulip,kou/zulip,punchagan/zulip,kou/zulip,jackrzhang/zulip,rishig/zulip