wesnoth: remove glibc-2.26 assert workaround

srcpkgs/wesnoth/patches/glibc-2.26-assert.patch

@@ -1,31 +0,0 @@
---- src/replay.cpp.orig	2016-05-18 00:57:46.000000000 +0000
-+++ src/replay.cpp	2017-09-22 20:22:56.660358034 +0000
-@@ -403,7 +403,7 @@
- 		last_location = *loc_it;
- 		
- 		const config &speak = command(last_location).child("speak");
--		assert(speak);
-+		assert(static_cast<bool>(speak));
- 		add_chat_log_entry(speak, chat_log_appender);
- 
- 	}
-@@ -581,7 +581,7 @@
- config &replay::command(int n)
- {
- 	config & retv = cfg_.child("command", n);
--	assert(retv);
-+	assert(static_cast<bool>(retv));
- 	return retv;
- }
- 
---- src/playcampaign.cpp.orig	2016-05-18 00:57:46.000000000 +0000
-+++ src/playcampaign.cpp	2017-09-22 20:25:32.094366053 +0000
-@@ -192,7 +192,7 @@
- 	if (gamestate.replay_start().empty()){
- 		// Backwards compatibility code for 1.2 and 1.2.1
- 		const config &scenario = game_config.find_child(type,"id",gamestate.carryover_sides_start["next_scenario"]);
--		assert(scenario);
-+		assert(static_cast<bool>(scenario));
- 		gamestate.replay_start() = scenario;
- 	}
- 	starting_pos = gamestate.replay_start();