python-pyrsistent: remove it from our feed as we upstreamed it

lang/python-pyrsistent/Makefile

-#
-# Copyright (C) 2019 CZ.NIC z.s.p.o. (http://www.nic.cz/)
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
-
-include $(TOPDIR)/rules.mk
-
-PKG_NAME:=python-pyrsistent
-PKG_VERSION:=0.15.2
-PKG_RELEASE:=1
-
-PKG_SOURCE:=pyrsistent-$(PKG_VERSION).tar.gz
-PKG_SOURCE_URL:=https://files.pythonhosted.org/packages/source/p/pyrsistent/
-PKG_HASH:=16692ee739d42cf5e39cef8d27649a8c1fdb7aa99887098f1460057c5eb75c3a
-
-PKG_BUILD_DIR:=$(BUILD_DIR)/pyrsistent-$(PKG_VERSION)
-
-PKG_MAINTAINER:=CZ.NIC <packaging@turris.cz>
-PKG_LICENSE:=MIT
-PKG_LICENSE_FILES:=LICENSE.mit
-
-include $(INCLUDE_DIR)/package.mk
-include $(TOPDIR)/feeds/packages/lang/python/python3-package.mk
-
-define Package/python3-pyrsistent
-  SUBMENU:=Python
-  SECTION:=lang
-  CATEGORY:=Languages
-  TITLE:=python3-pyrsistent
-  URL:=https://github.com/tobgu/pyrsistent
-  DEPENDS:=+python3-light +python3-six
-  VARIANT:=python3
-endef
-
-define Package/python3-pyrsistent/description
-  Persistent/Immutable/Functional data structures for Python
-endef
-
-$(eval $(call Py3Package,python3-pyrsistent))
-$(eval $(call BuildPackage,python3-pyrsistent))
-$(eval $(call BuildPackage,python3-pyrsistent-src))