main/postmarketos-initramfs-minimal: don't check btrfs (MR 5605)

Partially reverts: aed9243c (MR5238)

[ci:skip-build]: already built successfully in CI

main/postmarketos-initramfs-minimal/APKBUILD

@@ -2,7 +2,7 @@
 # only be used on devices that do not have space for the full size ramdisk.
 pkgname=postmarketos-initramfs-minimal
 pkgver=2.8.0
-pkgrel=0
+pkgrel=1
 pkgdesc="Deprecated minimal initramfs for space constrained devices"
 url="https://postmarketos.org"
 options="!check"  # no tests
@@ -92,7 +92,7 @@ sha512sums="
 ab41b45b0613f25a61114ed8c8b92bc53c60838f6e2e0ba18c76e5369b2984e6023a0661887692673aca3f647f268c468a468f6b1ac424cfee609017a89481dd  00-initramfs-base.files
 4129c444aae613c8a10a2e87c4485482d0023e665581f804c5f0b9f76e2dd6fec3c78d02af07672b1d9eeacfdcd32c8eb5adc2f5677b8774c74d0ee631d950bd  00-initramfs-extra-base.files
 102cb49a5b44282afee7808945c69e9bb9310677efeefc681d92217f0399a90fcbb37eb9ac7aed89cc27c324780298c7c2de6de2bdb89a77499faad1c312e539  init.sh
-4d08617c98c83cd47baf820bb536e3003cc983218f20291ec9f201415fe84e0968a819e8ed2d0ae8a9b717b58ca0a534d7796190bd3b704b76afc1f263dae911  init_functions.sh
+3e3cb29eabf9ee4c8dbd7ff2366aa8cea5f44b11b04df060d7841e9b8f25c85f0a2b19838b177a8b651f2b3c8b69135d36603534382c54736596d0bfa429ed87  init_functions.sh
 ba3275a9af788c7c782322a22a0f144d5e50e3498ea6886486a29331f23ae89cd32d500a3635cfa7cab369afba92edc18aeca64ccbf0cd589061cce23d15b46c  unudhcpd.conf
 675e7d5bee39b2df7d322117f8dcaccc274d61beaf4d50ead19bbf2109446d64b1c0aa0c5b4f9846eb6c1c403418f28f6364eff4537ba41120fbfcbc484b7da7  mdev.conf
 "

main/postmarketos-initramfs-minimal/init_functions.sh

@@ -325,12 +325,6 @@ check_filesystem() {
 	partition="$1"
 	type="$(get_partition_type "$partition")"
 	case "$type" in
-		btrfs)
-			echo "Check 'btrfs' root filesystem ($partition)"
-			if ! btrfs check --readonly "$partition" ; then
-				status="fail"
-			fi
-			;;
 		ext*)
 			echo "Auto-repair and check 'ext' filesystem ($partition)"
 			e2fsck -p "$partition"