tiff: remove uclibc++.mk include

The include injects a lib depend on libuClibc++.so.0 into the package,
even on musl. Remove it and replace the depend with libstcpp instead.

Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>

libs/tiff/Makefile

@@ -25,7 +25,6 @@ PKG_INSTALL:=1
 
 PKG_CONFIG_DEPENDS:=CONFIG_PACKAGE_libtiffxx
 
-include $(INCLUDE_DIR)/uclibc++.mk
 include $(INCLUDE_DIR)/package.mk
 
 define Package/tiff/Default
@@ -47,7 +46,7 @@ $(call Package/tiff/Default)
   SECTION:=libs
   CATEGORY:=Libraries
   TITLE+= library(c++ bindings)
-  DEPENDS:=+libtiff $(CXX_DEPENDS)
+  DEPENDS:=+libtiff +PACKAGE_libtiffxx:libstdcpp
 endef
 
 define Package/tiff-utils