files: remove systemd ExecStartPre command from service template

Author: tylerjl

files/etc/init.d/elasticsearch.systemd.erb

@@ -12,8 +12,6 @@ WorkingDirectory=<%= @resource[:homedir] %>
 User=<%= @resource[:user] %>
 Group=<%= @resource[:group] %>
 
-ExecStartPre=-/usr/share/elasticsearch/bin/elasticsearch-systemd-pre-exec
-
 ExecStart=/usr/share/elasticsearch/bin/elasticsearch \
                                                 -p <%= @resource[:pid_dir] %>/elasticsearch-<%= @resource[:instance] %>.pid \
                                                 <%= opt_flags.join(' ') %>