Delete .fscache from fog_of_war demo, closes #2079.

demos/2d/fog_of_war/.fscache

@@ -1,11 +0,0 @@
-::res://::1422910453
-floor.png::ImageTexture::1422910453::
-fog.gd::GDScript::1422910025::
-fog.png::ImageTexture::1422908128::
-fog.scn::PackedScene::1422909435::
-fog.xml::TileSet::1422909324::
-icon.png::ImageTexture::1422811193::
-tile_edit.scn::PackedScene::1422909313::
-troll.gd::GDScript::1422909940::
-troll.png::ImageTexture::1418669358::
-troll.scn::PackedScene::1418669358::