remove nag screen in sublimetext 3

remover.py

# Place this file in ~/.config/sublime-text-3/Packages/User/
import sublime
import sublime_plugin

import subprocess
from time import sleep
import sys

cl = lambda line: subprocess.Popen(line, shell=True, stdout=subprocess.PIPE).communicate()[0].strip()
log = lambda message: sys.stderr.write("Log: %s\n" % message)


class LicenseWindowKiller(sublime_plugin.EventListener):
    def run(self, edit):
        pass

    def seek_n_close(self):
        # Get main winids and pid
        out = cl("""wmctrl -Gpl | grep "Sublime Text (UNREGISTERED)" | awk '{print $1, $3}'""").splitlines()
        out = [c.strip() for c in out]
        for c in out:
            win_id, pid = c.split()
            pid = int(pid)
            out_2 = cl("""wmctrl -Gpl | grep '{}' | grep -v '{}'  | awk '{{print $1, $6, $7}}'""".format(pid, win_id)).decode().splitlines()
            for c_2 in out_2:
                w2_id, w, h = c_2.split()
                w, h = int(w), int(h)
                if (w, h) == (541, 179):
                    title = cl("""wmctrl -lp | grep {}| awk '{{print $5}}'""".format(w2_id)).decode()
                    if not title:
                        cl("wmctrl -i -c {}".format(w2_id))
                        return True
        return False

    def on_pre_save_async(self, *args):
        seek = True
        counter = 10
        while seek:
            sleep(.5)
            counter -= 1
            if counter < 0:
                seek = False
            seek = not self.seek_n_close()

Is there anything else you need to do other than add this to the proper directory?

it works only in linux with wmctrl command available and 1920x1080 screen resolution. you can adjust it for your resolution (try to play with values in line 28)