spdlog: remove

Since gerbera was removed, this is unused.

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

libs/spdlog/Makefile

@@ -1,53 +0,0 @@
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
-
-include $(TOPDIR)/rules.mk
-
-PKG_NAME:=spdlog
-PKG_VERSION:=1.9.2
-PKG_RELEASE:=$(AUTORELEASE)
-
-PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
-PKG_SOURCE_URL:=https://codeload.github.com/gabime/spdlog/tar.gz/v$(PKG_VERSION)?
-PKG_HASH:=6fff9215f5cb81760be4cc16d033526d1080427d236e86d70bb02994f85e3d38
-
-PKG_MAINTAINER:=
-PKG_LICENSE:=MIT
-PKG_LICENSE_FILES:=LICENSE
-
-CMAKE_INSTALL:=1
-
-include $(INCLUDE_DIR)/package.mk
-include $(INCLUDE_DIR)/cmake.mk
-
-define Package/spdlog
-  SECTION:=libs
-  CATEGORY:=Libraries
-  TITLE:=spdlog
-  URL:=https://github.com/gabime/spdlog
-  DEPENDS:=+libfmt
-  BUILDONLY:=1
-endef
-
-define Package/spdlog/description
-  Very fast, header-only/compiled, C++ logging library.
-endef
-
-CMAKE_OPTIONS += \
-	-DSPDLOG_BUILD_SHARED=OFF \
-	-DSPDLOG_BUILD_EXAMPLE=OFF \
-	-DSPDLOG_BUILD_EXAMPLE_HO=OFF \
-	-DSPDLOG_BUILD_TESTS=OFF \
-	-DSPDLOG_BUILD_TESTS_HO=OFF \
-	-DSPDLOG_BUILD_BENCH=OFF \
-	-DSPDLOG_SANITIZE_ADDRESS=OFF \
-	-DSPDLOG_INSTALL=ON \
-	-DSPDLOG_FMT_EXTERNAL=ON \
-	-DSPDLOG_FMT_EXTERNAL_HO=OFF \
-	-DSPDLOG_NO_EXCEPTIONS=OFF
-
-TARGET_CXXFLAGS += -flto
-
-$(eval $(call BuildPackage,spdlog))