nss: remove signlibs.sh

Looks like my "solution" also isn't working well at least for images with read-only-rootfs in IMAGE_FEATURES.

pkg_postinst_ontarget_${PN} is always forced to run on the target, which for read-only-rootfs results in:
log.do_rootfs:
...
NOTE: If an image is being built, the postinstalls for the following packages will be postponed for first boot: nss
...
ERROR: The following packages could not be configured offline and rootfs is read-only: ['nss']

and now looking at the /usr/bin/signlibs.sh and it does pretty much
the same as the postinst script when D isn't empty.

>From oe-core git history it shows that signlibs.sh was added first:
https://git.openembedded.org/openembedded-core/commit/?id=a4580f967c8064294a06d406acf5deb24aee2acc
then the offline version of postinst was added to support read-only-rootfs in:
https://git.openembedded.org/openembedded-core/commit/?id=64e87fc6e99bc1d4807034166735034b1f92bad8
and nss-native should always provide the shlibsign since:
https://git.openembedded.org/openembedded-core/commit/?id=88540c5b08dea069660d1a68e506aebdd68e6ae0
and only after
https://git.openembedded.org/openembedded-core/commit/?id=8f782f7095e718dd9452055af53363beb6bdbece
it looked like signlibs.sh was something special only for target.

So it looks to me, that we should just remove signlibs.sh script and let the same postinst be used on target and offline
(with or without D being empty).

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-support/nss/nss/signlibs.sh

@@ -1,20 +0,0 @@
-#!/bin/sh
-
-# signlibs.sh
-#
-# (c)2010 Wind River Systems, Inc.
-#
-# regenerates the .chk files for the NSS libraries that require it
-# since the ones that are built have incorrect checksums that were
-# calculated on the host where they really need to be done on the
-# target
-
-CHK_FILES=`ls /lib*/*.chk /usr/lib*/*.chk 2>/dev/null`
-SIGN_BINARY=`which shlibsign`
-for I in $CHK_FILES
-do
-       DN=`dirname $I`
-       BN=`basename $I .chk`
-       FN=$DN/$BN.so
-       $SIGN_BINARY -i $FN
-done

meta-oe/recipes-support/nss/nss_3.56.bb

@@ -21,7 +21,6 @@ VERSION_DIR = "${@d.getVar('BP').upper().replace('-', '_').replace('.', '_') + '
 
 SRC_URI = "http://ftp.mozilla.org/pub/mozilla.org/security/nss/releases/${VERSION_DIR}/src/${BP}.tar.gz \
            file://nss.pc.in \
-           file://signlibs.sh \
            file://0001-nss-fix-support-cross-compiling.patch \
            file://nss-no-rpath-for-cross-compiling.patch \
            file://nss-fix-incorrect-shebang-of-perl.patch \
@@ -214,7 +213,6 @@ do_install_append() {
         touch ${D}/${libdir}/$file
         chmod 755 ${D}/${libdir}/$file
     done
-    install -D -m 755 ${WORKDIR}/signlibs.sh ${D}/${bindir}/signlibs.sh
 
     install -d ${D}${libdir}/pkgconfig/
     sed 's/%NSS_VERSION%/${PV}/' ${WORKDIR}/nss.pc.in | sed 's/%NSPR_VERSION%/4.9.2/' > ${D}${libdir}/pkgconfig/nss.pc
@@ -251,10 +249,6 @@ pkg_postinst_${PN} () {
     done
 }
 
-pkg_postinst_ontarget_${PN} () {
-    ${bindir}/signlibs.sh
-}
-
 PACKAGES =+ "${PN}-smime"
 FILES_${PN}-smime = "\
     ${bindir}/smime \