libsmartconfig_2.4.2.zip is no longer needed or downloadable.

Makefile

@@ -69,7 +69,7 @@ libcirom: $(TOOLCHAIN)/xtensa-lx106-elf/sysroot/lib/libcirom.a
 
 sdk_patch: .sdk_patch_$(VENDOR_SDK)
 
-.sdk_patch_1.2.0: lib_mem_optimize_150714.zip libssl_patch_1.2.0-2.zip libsmartconfig_2.4.2.zip empty_user_rf_pre_init.o
+.sdk_patch_1.2.0: lib_mem_optimize_150714.zip libssl_patch_1.2.0-2.zip empty_user_rf_pre_init.o
 	#$(UNZIP) libssl_patch_1.2.0-2.zip
 	#$(UNZIP) libsmartconfig_2.4.2.zip
 	$(UNZIP) lib_mem_optimize_150714.zip