Revert "- prevent excessively bright pixels as this is actually visible on a HDR monitor"

This reverts commit 56d788f237181e04354042de4596135fd2fda193.

It caused graphics glitches with the partial invisibility effect.

wadsrc/static/shaders/glsl/present.fp

@@ -14,8 +14,6 @@ uniform int HdrMode;
 
 vec4 ApplyGamma(vec4 c)
 {
-	c.rgb = min(c.rgb, vec3(2.0)); // for HDR mode - prevents stacked translucent sprites (such as plasma) producing way too bright light
-
 	vec3 valgray;
 	if (GrayFormula == 0)
 		valgray = vec3(c.r + c.g + c.b) * (1 - Saturation) / 3 + c.rgb * Saturation;