external-poky-toolchain: This is broken and confusing now, remove it

This avoids a number of bogus preferred providers warnings too.

(From OE-Core rev: 823a2f96df84547216a26697838977a162f838c5)

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

meta/recipes-core/meta/external-poky-toolchain.bb

@@ -1,40 +0,0 @@
-PROVIDES = "\
-    linux-libc-headers \
-    virtual/${TARGET_PREFIX}gcc \
-    virtual/${TARGET_PREFIX}gcc-intermediate \
-    virtual/${TARGET_PREFIX}gcc-initial \
-    virtual/${TARGET_PREFIX}binutils \
-    virtual/${TARGET_PREFIX}libc-for-gcc \
-    virtual/libc \
-    virtual/libintl \
-    virtual/libiconv \
-    virtual/linux-libc-headers "
-RPROVIDES = "glibc-utils libsegfault glibc-thread-db libgcc-dev libstdc++-dev libstdc++"
-PACKAGES_DYNAMIC = "glibc-gconv-*"
-INHIBIT_DEFAULT_DEPS = "1"
-PR = "r1"
-
-# License applies to this recipe code, not the toolchain itself
-LICENSE = "MIT"
-
-do_install() {
-	if [ ! -e  ${prefix}/environment-setup ]; then
-		echo "The Poky toolchain could not be found in ${prefix}!"
-		exit 1
-	fi
-
-	install -d ${DEPLOY_DIR}/ipk/
-	install -d ${STAGING_DIR}/pkgdata/
-	install -d ${STAGING_DIR_TARGET}/shlibs/
-	install -d ${STAGING_DIR_TARGET}/${base_libdir}/
-	install -d ${STAGING_DIR_TARGET}/${libdir}/
-	install -d ${STAGING_DIR_TARGET}/${includedir}/
-
-	cp -ar ${prefix}/ipk/* ${DEPLOY_DIR}/ipk/
-	cp -ar ${prefix}/pkgdata/* ${STAGING_DIR}/pkgdata/
-	cp -ar ${prefix}/${TARGET_SYS}/shlibs/* ${STAGING_DIR_TARGET}/shlibs/
-	cp -ar ${prefix}/${TARGET_SYS}/lib/* ${STAGING_DIR_TARGET}/${base_libdir}/
-	cp -ar ${prefix}/${TARGET_SYS}/usr/include/* ${STAGING_DIR_TARGET}/${includedir}/
-	cp -ar ${prefix}/${TARGET_SYS}/usr/lib/* ${STAGING_DIR_TARGET}/${libdir}/
-}
-