task-self-hosted: remove duplicate packages

The package names are specified more than once.
We only need to keep one for each of them, so let's remove the duplicated
ones.
This patch makes no actual change to the functionality of the recipe.

(From OE-Core rev: 121a1499a81706366acc0081272a6bff634d4d62)

Signed-off-by: Dexuan Cui <dexuan.cui@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/tasks/task-self-hosted.bb

@@ -30,12 +30,6 @@ RDEPENDS_task-self-hosted = "\
 RDEPENDS_task-self-hosted-host-tools = "\
     connman \
     connman-plugin-ethernet \
-    parted \
-    e2fsprogs \
-    e2fsprogs-mke2fs \
-    e2fsprogs-tune2fs \
-    e2fsprogs-e2fsck \
-    e2fsprogs-fsck \
     dhcp-client \
     e2fsprogs \
     e2fsprogs-e2fsck \
@@ -65,7 +59,6 @@ RDEPENDS_task-self-hosted-sdk = "\
     cpp-symlinks \
     ccache \
     coreutils \
-    diffutils \
     distcc \
     eglibc-utils \
     file \
@@ -74,7 +67,6 @@ RDEPENDS_task-self-hosted-sdk = "\
     gcc-symlinks \
     g++ \
     g++-symlinks \
-    gettext \
     intltool \
     ldd \
     less \
@@ -88,7 +80,6 @@ RDEPENDS_task-self-hosted-sdk = "\
     pkgconfig \
     quilt \
     sed \
-    tcl \
     "
 
 RDEPENDS_task-self-hosted-debug = " \
@@ -100,7 +91,6 @@ RDEPENDS_task-self-hosted-debug = " \
 
 
 RDEPENDS_task-self-hosted-extended = "\
-    binutils \
     bzip2 \
     chkconfig \
     chrpath \
@@ -134,7 +124,6 @@ RDEPENDS_task-self-hosted-extended = "\
     openssl \
     opkg \
     opkg-utils \
-    parted \
     patch \
     perl \
     perl-dev \