fuse: don't run /usr/sbin/update-rc.d on install

[HiassofT]

Cross compiling should never call scripts that could change the host system.

When building on Debian Stretch as unprivileged user this causes the build to pause and ask for the root password which will eventually time out and continue.

/usr/sbin/update-rc.d fuse start 34 S . start 41 0 6 . || true
update-rc.d: warning: start and stop actions are no longer supported; falling back to defaults
update-rc.d: warning: stop runlevel arguments (0 6) do not match fuse Default-Stop values (none)
insserv: warning: current stop runlevel(s) (0 6) of script `fuse' overrides LSB defaults (empty).
insserv: fopen(.depend.stop): Permission denied
==== AUTHENTICATING FOR org.freedesktop.systemd1.reload-daemon ===
Authentication is required to reload the systemd state.
Authenticating as: root
Password: