remove size converter in case of IOS simulator

diff --git a/mediastreamer2 b/mediastreamer2
index dcadb7e8c2f14abfac2dc9d8308ceb20ef4b96ef..95ef77fe123c23a71e3fe1cb8932efaf048f399c 160000 (submodule)
--- a/mediastreamer2
+++ b/mediastreamer2
@@ -1 +1 @@
-Subproject commit dcadb7e8c2f14abfac2dc9d8308ceb20ef4b96ef
+Subproject commit 95ef77fe123c23a71e3fe1cb8932efaf048f399c