ninja: remove

There's no point to this package. Ninja files are typically generated by
meson or CMake, none of which are available as packages.

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

devel/ninja/Makefile

@@ -1,51 +0,0 @@
-include $(TOPDIR)/rules.mk
-
-PKG_NAME:=ninja
-PKG_VERSION:=1.10.2
-PKG_RELEASE:=3
-
-PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
-PKG_SOURCE_URL:=https://codeload.github.com/ninja-build/ninja/tar.gz/v$(PKG_VERSION)?
-PKG_HASH:=ce35865411f0490368a8fc383f29071de6690cbadc27704734978221f25e2bed
-
-PKG_MAINTAINER:=Andre Heider <a.heider@gmail.com>
-PKG_LICENSE:=Apache-2.0
-PKG_LICENSE_FILES:=COPYING
-
-include $(INCLUDE_DIR)/package.mk
-
-CONFIGURE_ARGS:=
-ifneq ($(findstring c,$(OPENWRT_VERBOSE)),)
-  CONFIGURE_ARGS+=--verbose
-endif
-
-define Package/ninja
-  SECTION:=devel
-  CATEGORY:=Development
-  TITLE:=ninja
-  URL:=https://ninja-build.org/
-  DEPENDS:=+libstdcpp
-endef
-
-define Package/ninja/description
-  Ninja is a small build system with a focus on speed. It differs from other build systems in two major respects: it is designed to have its input files generated by a higher-level build system, and it is designed to run builds as fast as possible.
-endef
-
-define Package/ninja/install
-	$(INSTALL_DIR) $(1)/usr/bin
-	$(INSTALL_BIN) $(PKG_BUILD_DIR)/ninja $(1)/usr/bin/
-endef
-
-define Build/Configure
-	cd $(PKG_BUILD_DIR) && \
-		CXX="$(TARGET_CXX)" \
-		CXXFLAGS="$(TARGET_CXXFLAGS) $(EXTRA_CXXFLAGS) $(TARGET_CPPFLAGS) $(EXTRA_CPPFLAGS)" \
-		LDFLAGS="$(TARGET_LDFLAGS) $(EXTRA_LDFLAGS)" \
-		$(STAGING_DIR_HOST)/bin/$(PYTHON) configure.py $(CONFIGURE_ARGS)
-endef
-
-define Build/Compile
-	+$(NINJA) -C $(PKG_BUILD_DIR) $(1)
-endef
-
-$(eval $(call BuildPackage,ninja))