libdouble-conversion: remove

Nothing uses this.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

libs/libdouble-conversion/Makefile

@@ -1,60 +0,0 @@
-#
-# Copyright (C) 2008-2016 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
-
-include $(TOPDIR)/rules.mk
-
-PKG_NAME:=libdouble-conversion
-PKG_VERSION:=3.1.5
-PKG_RELEASE:=3
-
-PKG_SOURCE:=double-conversion-$(PKG_VERSION).tar.gz
-PKG_SOURCE_URL:=https://codeload.github.com/google/double-conversion/tar.gz/v$(PKG_VERSION)?
-PKG_HASH:=a63ecb93182134ba4293fd5f22d6e08ca417caafa244afaa751cbfddf6415b13
-
-HOST_BUILD_DIR:=$(BUILD_DIR_HOST)/double-conversion-$(PKG_VERSION)
-PKG_BUILD_DIR:=$(BUILD_DIR)/double-conversion-$(PKG_VERSION)
-
-PKG_MAINTAINER:=
-PKG_LICENSE:=BSD-3c
-PKG_LICENSE_FILES:=COPYING LICENSE
-
-CMAKE_INSTALL:=1
-
-include $(INCLUDE_DIR)/package.mk
-include $(INCLUDE_DIR)/host-build.mk
-include $(INCLUDE_DIR)/cmake.mk
-
-define Package/libdouble-conversion
-  SECTION:=libs
-  CATEGORY:=Libraries
-  TITLE:=Efficient binary-decimal and decimal-binary conversion routines for IEEE doubles
-  URL:=https://github.com/google/double-conversion
-  DEPENDS:=+libstdcpp
-endef
-
-define Package/libdouble-conversion/description
-  double-conversion provides binary-decimal and decimal-binary routines for IEEE doubles.
-
-  The library consists of efficient conversion routines that have been extracted
-  from the V8 JavaScript engine. The code has been refactored and improved so that
-  it can be used more easily in other projects.
-endef
-
-CMAKE_OPTIONS += \
-	-DBUILD_SHARED_LIBS=ON \
-	-DBUILD_TESTING=OFF
-
-TARGET_CXXFLAGS += -ffunction-sections -fdata-sections -fno-rtti -flto
-TARGET_LDFLAGS += -Wl,--gc-sections
-
-define Package/libdouble-conversion/install
-	$(INSTALL_DIR) $(1)/usr/lib
-	$(CP) $(PKG_INSTALL_DIR)/usr/lib/lib*.so* $(1)/usr/lib/
-endef
-
-$(eval $(call BuildPackage,libdouble-conversion))
-$(eval $(call HostBuild))