games/monster-masher: Remove esound dependency

Since libgnome 2.30 gnome_sound_connection_get() always returns -1 [1],
so calling esd_sample_play() can never work.

[1] https://developer.gnome.org/libgnome/stable/libgnome-gnome-sound.html#gnome-sound-connection-get

PR: 230695
Submitted by: tobik
Approved by: kwm (maintainer timeout, 2 weeks)