treewide: unmark selected packages nonshared

This partially reverts changes done in commit 72cc44958e ("treewide:
mark selected packages nonshared") as it removes the nonshared flag, but
keeps the PKG_RELEASE as the PKG_RELEASE bump while adding nonshared
flag was incorrect.

Unmark uci, ubus, libubox, lua, libnl-tiny and libjson-c as nonshared
packages as this fix attempt didn't worked out. Currently the
imagebuilder is broken again:

 openwrt-imagebuilder-21.02.0-rc3-ipq40xx-generic.Linux-x86_64$ make image PROFILE=avm_fritzbox-7530 PACKAGES=luci-ssl-openssl
 ...
 Collected errors:
  * pkg_hash_check_unresolved: cannot find dependency libiwinfo20210430 for luci-mod-status
  * pkg_hash_fetch_best_installation_candidate: Packages for luci-mod-status found, but incompatible with the architectures configured
  * pkg_hash_check_unresolved: cannot find dependency libiwinfo20210430 for rpcd-mod-iwinfo
  * pkg_hash_fetch_best_installation_candidate: Packages for rpcd-mod-iwinfo found, but incompatible with the architectures configured
  * satisfy_dependencies_for: Cannot satisfy the following dependencies for luci-ssl-openssl:
  * 	libiwinfo20210430
  * opkg_install_cmd: Cannot install package luci-ssl-openssl.

Everything because iwinfo's ABI was changed two times since rc3 release:

 +IWINFO_ABI_VERSION:=20210430
 +IWINFO_ABI_VERSION:=20210420

Since iwinfo is marked as nonshared, it wasn't built by phase2 builders, but
luci-mod-status was already updated 2 times since rc3 and was thus rebuilt by
phase2 builders:

 d1d452ed2fb3 luci-mod-status: don't set '-' hostname when creating static lease
 95b3633055c1 luci-mod-status: switch to html table for wlan channel analysis

So now luci-mod-status depends on libiwinfo20210430 but only
libiwinfo20210106 can be downloaded. This is first part of the fix, in
the upcoming commit Jo is going to remove nonshared flag from iwinfo
package as well.

References: https://lists.infradead.org/pipermail/openwrt-devel/2021-July/035736.html
References: https://lists.infradead.org/pipermail/openwrt-devel/2021-July/035741.html
Acked-by: Jo-Philipp Wich <jo@mein.io>
Reported-by: Nick Hainke <vincent@systemli.org>
Signed-off-by: Petr Štetiar <ynezz@true.cz>

package/libs/libjson-c/Makefile

@@ -20,7 +20,6 @@ PKG_LICENSE:=MIT
 PKG_LICENSE_FILES:=COPYING
 PKG_CPE_ID:=cpe:/a:json-c_project:json-c
 
-PKG_FLAGS := nonshared
 HOST_BUILD_PREFIX:=$(STAGING_DIR_HOST)
 
 include $(INCLUDE_DIR)/package.mk

package/libs/libnl-tiny/Makefile

@@ -17,8 +17,6 @@ PKG_SOURCE_VERSION:=c291088f631d1694f7ba0444b59677b194348da8
 PKG_MIRROR_HASH:=99bcce12701bb34dadb39689d95c2c5cf1e27719d0ecfd645d3957a8947025ac
 CMAKE_INSTALL:=1
 
-PKG_FLAGS := nonshared
-
 PKG_LICENSE:=LGPL-2.1
 PKG_MAINTAINER:=Felix Fietkau <nbd@nbd.name>
 

package/libs/libubox/Makefile

@@ -11,8 +11,6 @@ PKG_SOURCE_VERSION:=b14c4688612c05c78ce984d7bde633bce8703b1e
 PKG_ABI_VERSION:=$(call abi_version_str,$(PKG_SOURCE_DATE))
 CMAKE_INSTALL:=1
 
-PKG_FLAGS := nonshared
-
 PKG_LICENSE:=ISC
 PKG_LICENSE_FILES:=
 

package/system/ubus/Makefile

@@ -15,7 +15,6 @@ PKG_LICENSE:=LGPL-2.1
 PKG_LICENSE_FILES:=
 PKG_MAINTAINER:=Felix Fietkau <nbd@nbd.name>
 
-PKG_FLAGS := nonshared
 PKG_ASLR_PIE_REGULAR:=1
 
 include $(INCLUDE_DIR)/package.mk

package/system/uci/Makefile

@@ -22,8 +22,6 @@ PKG_LICENSE_FILES:=
 
 PKG_MAINTAINER:=Felix Fietkau <nbd@nbd.name>
 
-PKG_FLAGS := nonshared
-
 include $(INCLUDE_DIR)/package.mk
 include $(INCLUDE_DIR)/cmake.mk
 

package/utils/lua/Makefile

@@ -16,7 +16,6 @@ PKG_SOURCE_URL:=http://www.lua.org/ftp/ \
 	http://www.tecgraf.puc-rio.br/lua/ftp/
 PKG_HASH:=2640fc56a795f29d28ef15e13c34a47e223960b0240e8cb0a82d9b0738695333
 PKG_BUILD_PARALLEL:=1
-PKG_FLAGS := nonshared
 
 PKG_LICENSE:=MIT
 PKG_LICENSE_FILES:=COPYRIGHT