drop files supporting shared source

classes/shared-source-provide.bbclass

@@ -1,38 +0,0 @@
-# In order to share the same source between multiple packages (.bb files), we
-# unpack and patch the X source here into a shared dir.
-#
-# Take a look at gcc-source.inc for the general structure of this
-
-# We require that "SOURCE_NAME" be set
-
-# nopackages.bbclass {
-deltask do_package
-deltask do_package_write_rpm
-deltask do_package_write_ipk
-deltask do_package_write_deb
-deltask do_package_qa
-deltask do_packagedata
-#}
-
-deltask do_configure
-deltask do_compile
-deltask do_install
-deltask do_populate_sysroot
-deltask do_populate_lic
-deltask do_rm_work
-
-
-# override to get rid of '-native' or other misc
-# XXX: consider ${PR}
-PN = "${SOURCE_NAME}-source-${PV}"
-WORKDIR = "${TMPDIR}/work-shared/${SOURCE_NAME}-${PV}-${PR}"
-SSTATE_SWSPEC = "sstate:${SOURCE_NAME}::${PV}:${PR}::${SSTATE_VERSION}:"
-
-STAMP = "${STAMPS_DIR}/work-shared/${SOURCE_NAME}-${PV}-${PR}"
-STAMPCLEAN = "${STAMPS_DIR}/work-shared/${SOURCE_NAME}-${PV}-*"
-
-INHIBIT_DEFAULT_DEPS = "1"
-DEPENDS = ""
-PACKAGES = ""
-
-EXCLUDE_FROM_WORLD = "1"

classes/shared-source-use.bbclass

@@ -1,23 +0,0 @@
-# gcc's shared source code disables fetch (via the commented code below). We
-# can't do that because rust.bb currently fetches a rustc-snapshot archive itself.
-#do_fetch() {
-#	:
-#}
-#do_fetch[noexec] = "1"
-
-# gcc does `deltask` do_unpack. We avoid this so that the depends work sanely
-# (things that need source code can still be ordered after do_unpack).
-# As a side effect, we can also unpack things that aren't shared.
-# Note: just setting this normally doesn't work. Use of python() is required.
-python () {
-	d.setVarFlag('do_unpack', 'cleandirs', '')
-}
-# Avoid disabling do_patch for the same reason.
-#deltask do_patch
-
-SRC_URI = ""
-
-S = "${TMPDIR}/work-shared/${SOURCE_NAME}-${PV}-${PR}"
-
-do_unpack[depends] += "${SOURCE_NAME}-source-${PV}:do_patch"
-do_populate_lic[depends] += "${SOURCE_NAME}-source-${PV}:do_unpack"