gzip/pigz/expat/image: Simplify gzip-native/pigz-native

With recipe specific sysroots, the gzip-replacement-native dance/class
is obsolete, simplify the code accordingly.

(From OE-Core rev: 39865fdf3698a130f792d41853f9c9ca1901e335)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/gzipnative.bbclass

@@ -1,5 +0,0 @@
-EXTRANATIVEPATH += "pigz-native gzip-native"
-DEPENDS += "gzip-native"
-
-# tar may get run by do_unpack or do_populate_lic which could call gzip
-do_unpack[depends] += "gzip-native:do_populate_sysroot"

meta/classes/image.bbclass

@@ -9,8 +9,6 @@ TOOLCHAIN_TARGET_TASK += "${PACKAGE_INSTALL}"
 TOOLCHAIN_TARGET_TASK_ATTEMPTONLY += "${PACKAGE_INSTALL_ATTEMPTONLY}"
 POPULATE_SDK_POST_TARGET_COMMAND += "rootfs_sysroot_relativelinks; "
 
-inherit gzipnative
-
 LICENSE = "MIT"
 PACKAGES = ""
 DEPENDS += "${MLPREFIX}qemuwrapper-cross depmodwrapper-cross"

meta/classes/image_types.bbclass

@@ -359,7 +359,7 @@ CONVERSION_CMD_sha384sum = "sha384sum ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}
 CONVERSION_CMD_sha512sum = "sha512sum ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} > ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.sha512sum"
 CONVERSION_CMD_bmap = "bmaptool create ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type} -o ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}.bmap"
 CONVERSION_DEPENDS_lzma = "xz-native"
-CONVERSION_DEPENDS_gz = ""
+CONVERSION_DEPENDS_gz = "pigz-native"
 CONVERSION_DEPENDS_bz2 = "pbzip2-native"
 CONVERSION_DEPENDS_xz = "xz-native"
 CONVERSION_DEPENDS_lz4 = "lz4-native"