phpstan: clean out some more dead error patterns

tests/phpstan/configs/gc-hacks.neon

@@ -80,8 +80,3 @@ parameters:
 			count: 1
 			path: ../../../src/world/World.php
 
-		-
-			message: "#^Property pocketmine\\\\world\\\\World\\:\\:\\$temporalPosition \\(pocketmine\\\\world\\\\Position\\) does not accept null\\.$#"
-			count: 1
-			path: ../../../src/world/World.php
-

tests/phpstan/configs/runtime-type-checks.neon

@@ -7,7 +7,7 @@ parameters:
 
 		-
 			message: "#^Call to function assert\\(\\) with bool will always evaluate to true\\.$#"
-			count: 2
+			count: 1
 			path: ../../../src/block/tile/TileFactory.php
 
 		-