privoxy: clear PKG_MAINTAINER

I do not use this software any more and due to lack of time, I give the
maintenance responsibility back to the community.

Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

net/privoxy/Makefile

@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2006-2016 OpenWrt.org
+# Copyright (C) 2006-2017 OpenWrt.org
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=privoxy
 PKG_VERSION:=3.0.26
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 
 PKG_SOURCE:=privoxy-$(PKG_VERSION)-stable-src.tar.gz
 PKG_SOURCE_URL:=@SF/ijbswa
@@ -21,7 +21,7 @@ PKG_INSTALL:=1
 PKG_LICENSE:=GPL-2.0
 PKG_LICENSE_FILES:=LICENSE
 
-PKG_MAINTAINER:=Christian Schoenebeck <christian.schoenebeck@gmail.com>
+PKG_MAINTAINER:=
 
 PKG_CONFIG_DEPENDS:= \
   CONFIG_IPV6 \
@@ -77,7 +77,6 @@ define Package/privoxy/config
 		Run as : $(USERID)
 		Version: $(PKG_VERSION)-$(PKG_RELEASE)
 		Home   : $(URL)
-		$(PKG_MAINTAINER)
 
 	source "$(SOURCE)/Config.in"
 endef