Minor clean

h3d/impl/GlDriver.hx

@@ -1803,11 +1803,6 @@ class GlDriver extends Driver {
 		for( i in 0...boundTextures.length )
 			boundTextures[i] = null;
 
-		// if( !tex.flags.has(WasCleared) ) {
-		// 	tex.flags.set(WasCleared); // once we draw to, do not clear again
-		// 	clear(BLACK);
-		// }
-
 		#if js
 		if( glDebug ) {
 			var code = gl.checkFramebufferStatus(GL.FRAMEBUFFER);

h3d/scene/pbr/Environment.hx

@@ -187,7 +187,6 @@ class CubeToPanorama extends h3d.shader.ScreenShader {
 		@param var source : SamplerCube;
 
 		function fragment() {
-			var PI = 3.1415926;
 			var fovX = PI * 2;
 			var fovY = PI;
 			var hOffset = (2.0 * PI - fovX) * 0.5;