Drop mtd-utils bbappend

Extension to MTD to export libraries and header was merged into OE-Core.
It is not necessary anymore here, and it can be dropped.

Signed-off-by: Stefano Babic <sbabic@denx.de>

recipes-devtools/mtd/mtd-utils_%.bbappend

@@ -1,20 +0,0 @@
-FILESEXTRAPATHS:prepend := "${THISDIR}/files:"
-
-FILES:${PN}-staticdev += "ubi-utils/libubi.a ${libdir}/*.a"
-
-do_install:append () {
-	install -d ${D}${includedir}/mtd/
-	install -d ${D}${libdir}/
-	install -m 0644 ${S}/include/libubi.h ${D}${includedir}
-	install -m 0644 ${S}/include/libmtd.h ${D}${includedir}
-	install -m 0644 ${S}/include/libscan.h ${D}${includedir}
-	install -m 0644 ${S}/include/libubigen.h ${D}${includedir}
-	ln -s ../libubi.h ${D}${includedir}/mtd/libubi.h
-	ln -s ../libmtd.h ${D}${includedir}/mtd/libmtd.h
-	ln -s ../libscan.h ${D}${includedir}/mtd/libscan.h
-	ln -s ../libubigen.h ${D}${includedir}/mtd/libubigen.h
-	oe_libinstall -a libubi ${D}${libdir}/
-	oe_libinstall -a libmtd ${D}${libdir}/
-}
-
-BBCLASSEXTEND += "native"