Revert ubuntu-cpc: Disable boot splash

These introduced a regression for ppc64el and needs more time to bake.
This reverts commits 1deb0c68e8 &
6dbb30f53b.

 * "ubuntu-cpc: Fix ppc64el grub console update"
 * "ubuntu-cpc: Disable boot splash in all cloud images (LP: #1725358)"

live-build/ubuntu-cpc/hooks.d/base/disk-image-ppc64el.binary

@@ -35,15 +35,19 @@ install_grub() {
     chroot mountpoint apt-get -qqy remove --purge grub-legacy-ec2
 
     # set the kernel commandline to use hvc0
-    CONSOLES="console=hvc0 earlyprintk"
-    # Append to the existing GRUB_CMDLINE_LINUX_DEFAULT line
-    if [ ! -f mountpoint/etc/default/grub.d/50-cloudimg-settings.cfg ]; then
-        echo "Expected to find an existing grub config override"
-        exit 1
-    fi
-    sed -e "/^\s*GRUB_CMDLINE_LINUX_DEFAULT=/{s/=\"\"/=\"$CONSOLES$itemNum\"/;t;s/\"$/ $CONSOLES$itemNum&/;}" \
-        mountpoint/etc/default/grub.d/50-cloudimg-settings.cfg
+    mkdir -p mountpoint/etc/default/grub.d
+    cat << EOF > mountpoint/etc/default/grub.d/50-cloudimg-settings.cfg
+${IMAGE_STR}
 
+# Set the recordfail timeout
+GRUB_RECORDFAIL_TIMEOUT=0
+
+# Do not wait on grub prompt
+GRUB_TIMEOUT=0
+
+# Set the default commandline
+GRUB_CMDLINE_LINUX_DEFAULT="console=hvc0 earlyprintk"
+EOF
     prep_partition="/dev/mapper${loop_device///dev/}p2"
     chroot mountpoint grub-install "${prep_partition}" \
         --no-nvram \

live-build/ubuntu-cpc/hooks.d/chroot/999-cpc-fixes.chroot

@@ -112,27 +112,9 @@ if [ "${SUBPROJECT:-}" = minimized ]; then
 	_xchroot "${rootd}" apt clean
 fi
 
-# for Quantal and later, use /etc/default/grub.d functionality
-# rather than modifying the grub configuration itself.
-# This avoids the mess of having to do dpkg stuff
-# LP: 1179940
-mkdir -p "${rootd}/etc/default/grub.d"
-cat << EOF > "${rootd}/etc/default/grub.d/50-cloudimg-settings.cfg"
-# Cloud Image specific Grub settings for Generic Cloud Images
-${CLOUD_IMG_STR}
-
-# Set the recordfail timeout
-GRUB_RECORDFAIL_TIMEOUT=0
-
-# Do not wait on grub prompt
-GRUB_TIMEOUT=0
-
-# Drop 'quiet' and 'splash' for cloud images
-GRUB_CMDLINE_LINUX_DEFAULT=""
-EOF
-
 #### END COMMON ARCH FUNCTIONS
 
+
 case $arch in
 	# ARM, ppc, riscv64 and s390x images are special
 	armhf|arm64|powerpc|ppc64el|s390x|riscv64)
@@ -205,15 +187,23 @@ fi
 psuedo_grub_probe > "${gprobe}"
 chmod 755 "${gprobe}"
 
+# for Quantal and later, use /etc/default/grub.d functionality
+# rather than modifying the grub configuration itself.
+# This avoids the mess of having to do dpkg stuff
+# LP: 1179940
+mkdir -p "${rootd}/etc/default/grub.d"
+cat << EOF > "${rootd}/etc/default/grub.d/50-cloudimg-settings.cfg"
+# Cloud Image specific Grub settings for Generic Cloud Images
+${CLOUD_IMG_STR}
 
-# Set the consoles on the default grub commandline
-CONSOLES="console=tty1 console=ttyS0"
-# Append to the existing GRUB_CMDLINE_LINUX_DEFAULT line
-sed -e "/^\s*GRUB_CMDLINE_LINUX_DEFAULT=/{s/=\"\"/=\"$CONSOLES$itemNum\"/;t;s/\"$/ $CONSOLES$itemNum&/;}" \
-    "${rootd}/etc/default/grub.d/50-cloudimg-settings.cfg"
+# Set the recordfail timeout
+GRUB_RECORDFAIL_TIMEOUT=0
+
+# Do not wait on grub prompt
+GRUB_TIMEOUT=0
 
-# Append the terminal console setting to the cloud grub config
-cat << EOF >> "${rootd}/etc/default/grub.d/50-cloudimg-settings.cfg"
+# Set the default commandline
+GRUB_CMDLINE_LINUX_DEFAULT="console=tty1 console=ttyS0"
 
 # Set the grub console type
 GRUB_TERMINAL=console