build_emoji: Remove old code in favor of `generate_sprite_css_files()`.
build_emoji: Remove old code in favor of `generate_sprite_css_files()`.

rht/zulip,eeshangarg/zulip,brainwane/zulip,showell/zulip,dhcrzf/zulip,Galexrt/zulip,timabbott/zulip,zulip/zulip,tommyip/zulip,dhcrzf/zulip,amanharitsh123/zulip,jackrzhang/zulip,brockwhittaker/zulip,andersk/zulip,Galexrt/zulip,eeshangarg/zulip,punchagan/zulip,verma-varsha/zulip,showell/zulip,kou/zulip,amanharitsh123/zulip,brainwane/zulip,verma-varsha/zulip,eeshangarg/zulip,hackerkid/zulip,timabbott/zulip,kou/zulip,brainwane/zulip,amanharitsh123/zulip,jackrzhang/zulip,synicalsyntax/zulip,Galexrt/zulip,andersk/zulip,tommyip/zulip,dhcrzf/zulip,mahim97/zulip,rht/zulip,punchagan/zulip,Galexrt/zulip,synicalsyntax/zulip,brockwhittaker/zulip,mahim97/zulip,brainwane/zulip,rishig/zulip,brockwhittaker/zulip,jackrzhang/zulip,brainwane/zulip,verma-varsha/zulip,verma-varsha/zulip,zulip/zulip,tommyip/zulip,zulip/zulip,verma-varsha/zulip,dhcrzf/zulip,verma-varsha/zulip,brockwhittaker/zulip,dhcrzf/zulip,shubhamdhama/zulip,hackerkid/zulip,amanharitsh123/zulip,eeshangarg/zulip,hackerkid/zulip,andersk/zulip,synicalsyntax/zulip,shubhamdhama/zulip,mahim97/zulip,zulip/zulip,andersk/zulip,rishig/zulip,brockwhittaker/zulip,hackerkid/zulip,Galexrt/zulip,zulip/zulip,kou/zulip,synicalsyntax/zulip,Galexrt/zulip,punchagan/zulip,tommyip/zulip,brainwane/zulip,mahim97/zulip,punchagan/zulip,kou/zulip,brainwane/zulip,timabbott/zulip,punchagan/zulip,showell/zulip,punchagan/zulip,rht/zulip,amanharitsh123/zulip,rishig/zulip,hackerkid/zulip,rht/zulip,showell/zulip,showell/zulip,shubhamdhama/zulip,tommyip/zulip,shubhamdhama/zulip,andersk/zulip,zulip/zulip,kou/zulip,shubhamdhama/zulip,eeshangarg/zulip,zulip/zulip,timabbott/zulip,tommyip/zulip,jackrzhang/zulip,brockwhittaker/zulip,jackrzhang/zulip,eeshangarg/zulip,timabbott/zulip,hackerkid/zulip,jackrzhang/zulip,mahim97/zulip,andersk/zulip,tommyip/zulip,shubhamdhama/zulip,rishig/zulip,Galexrt/zulip,rishig/zulip,eeshangarg/zulip,amanharitsh123/zulip,timabbott/zulip,punchagan/zulip,dhcrzf/zulip,synicalsyntax/zulip,timabbott/zulip,jackrzhang/zulip,kou/zulip,rishig/zulip,shubhamdhama/zulip,kou/zulip,rht/zulip,hackerkid/zulip,andersk/zulip,rht/zulip,dhcrzf/zulip,synicalsyntax/zulip,rht/zulip,mahim97/zulip,synicalsyntax/zulip,showell/zulip,showell/zulip,rishig/zulip