dev-ml/*: remove empty RDEPEND lines (lint cleanup)

Signed-off-by: Alain Emilia Anna Zscheile <fogti+devel@ytrizja.de>
Signed-off-by: David Roman <davidroman96@gmail.com>

dev-ml/bheap/bheap-2.0.0.ebuild

@@ -14,9 +14,7 @@ SLOT="0/${PV}"
 KEYWORDS="~amd64"
 IUSE="ocamlopt test"
 
-RDEPEND=""
 DEPEND="
-	${RDEPEND}
 	test? ( dev-ml/stdlib-shims )
 "
 

dev-ml/cdrom/cdrom-0.9.4.ebuild

@@ -13,6 +13,3 @@ LICENSE="LGPL-2.1-with-linking-exception"
 SLOT="0/${PV}"
 KEYWORDS="~amd64"
 IUSE="ocamlopt"
-
-DEPEND=""
-RDEPEND="${DEPEND}"

dev-ml/domain-name/domain-name-0.4.0.ebuild

@@ -16,8 +16,6 @@ IUSE="ocamlopt test"
 
 RESTRICT="!test? ( test )"
 
-RDEPEND=""
 DEPEND="
-	${RDEPEND}
 	test? ( dev-ml/alcotest )
 "

dev-ml/gmap/gmap-0.3.0-r2.ebuild

@@ -17,9 +17,7 @@ SLOT="0/${PV}"
 KEYWORDS="~amd64"
 IUSE="ocamlopt test"
 
-RDEPEND=""
 DEPEND="
-	${RDEPEND}
 	test? (
 		dev-ml/alcotest
 		dev-ml/fmt

dev-ml/pecu/pecu-0.6.ebuild

@@ -15,9 +15,7 @@ SLOT="0/${PV}"
 KEYWORDS="~amd64"
 IUSE="ocamlopt test"
 
-RDEPEND=""
 DEPEND="
-	${RDEPEND}
 	test? (
 		dev-ml/alcotest
 		dev-ml/astring

dev-ml/randomconv/randomconv-0.1.3.ebuild

@@ -18,4 +18,4 @@ KEYWORDS="~amd64"
 IUSE="ocamlopt"
 
 RDEPEND="dev-ml/cstruct"
-DEPEND="${DEPEND}"
+DEPEND="${RDEPEND}"

dev-ml/stringext/stringext-1.6.0-r2.ebuild

@@ -17,9 +17,7 @@ SLOT="0/${PV}"
 KEYWORDS="~amd64"
 IUSE="ocamlopt test"
 
-RDEPEND=""
 DEPEND="
-	${RDEPEND}
 	test? (
 		dev-ml/ounit2
 		dev-ml/qtest

dev-ml/xmlm/xmlm-1.4.0.ebuild

@@ -17,7 +17,6 @@ SLOT="0/${PV}"
 KEYWORDS="~amd64"
 IUSE="test"
 
-RDEPEND=""
 DEPEND="dev-ml/topkg"
 BDEPEND="dev-ml/ocamlbuild"