software/headless-chromium: remove old launcher template files

software/headless-chromium/templates/launcher.in

-#! {{ param_chromium_headless['bin_shell'] }}
-
-# Run headless Chromium
-exec {{ param_chromium_headless['chromium_wrapper'] }} \
-  --remote-debugging-port={{ param_chromium_headless['remote-debugging-port'] }} \
-  --remote-debugging-address=:: \
-  {{ param_chromium_headless['url'] }}

software/headless-chromium/templates/nginx_launcher.in

-#!{{ param_chromium_headless['bin_shell'] }}
-
-{{ param_chromium_headless['bin_nginx'] }} \
-  -c {{ param_chromium_headless['nginx_config_target'] }}