dev-libs/hts_engine: toss IUSE=speech-tools out

Simply cannot work now since it would need to add
"-I/usr/include/speech-tools/" for "EST_walloc.h" and linking to a
library like libestbase.so for the functions it would make use of.

Signed-off-by: Haelwenn (lanodan) Monnier <contact@hacktivis.me>

dev-libs/hts_engine/hts_engine-1.10.ebuild

@@ -10,14 +10,7 @@ S="${WORKDIR}/hts_engine_API-${PV}"
 LICENSE="BSD"
 SLOT="0"
 KEYWORDS="~amd64"
-IUSE="speech-tools"
-
-DEPENDS="speech-tools? ( app-accessibility/speech-tools )"
 
 PATCHES=(
 	"${FILESDIR}/hts_engine-1.10-musl.patch"
 )
-
-src_configure() {
-	econf $(use_enable speech-tools festival)
-}

dev-libs/hts_engine/metadata.xml

@@ -5,9 +5,6 @@
 		<email>contact@hacktivis.me</email>
 		<name>Haelwenn (lanodan) Monnier</name>
 	</maintainer>
-	<use>
-		<flag name="speech-tools">use memory allocation/free functions of <pkg>app-accessibility/speech-tools</pkg></flag>
-	</use>
 	<upstream>
 		<remote-id type="sourceforge">hts-engine</remote-id>
 	</upstream>