Remove fixes from before_bootloader_context

These items are taken care of in unpackfs.conf and
shellprocess_fix_audio_perms.conf now

ubuntustudio/modules/before_bootloader_context.conf

@@ -10,10 +10,6 @@ firmwareType:
              timeout: 10
         -    command: sed -i '/deb http/d' /etc/apt/sources.list
              timeout: 10
-        -    command: if [ -f /etc/apt/sources.list.d/dvd.list ]; then rm /etc/apt/sources.list.d/dvd.list; fi
-             timeout: 10
-        -    command: if [ -f /etc/security/limits.d/audio.conf.disabled ]; then mv /etc/security/limits.d/audio.conf.disabled /etc/security/limits.d/audio.conf; fi
-             timeout: 10
         -    command: apt-get update
              timeout: 120
         -    command: apt install -y --no-upgrade -o Acquire::gpgv::Options::=--ignore-time-conflict grub-efi-$(if grep -q 64 /sys/firmware/efi/fw_platform_size; then echo amd64-signed; else echo ia32; fi)