Revert "Adds blinding + blindfolds (#8688)" (#9689)

This reverts commit 7a7ab5e8c1.

Content.Shared/Eye/Blinding/BlindableComponent.cs

@@ -1,26 +0,0 @@
-using Robust.Shared.GameStates;
-
-namespace Content.Shared.Eye.Blinding
-{
-    [RegisterComponent]
-    [NetworkedComponent]
-    public sealed class BlindableComponent : Component
-    {
-        /// <description>
-        /// How many sources of blindness are affecting us?
-        /// </description>
-        [DataField("sources")]
-        public int Sources = 0;
-
-        /// <description>
-        /// Used to ensure that this doesn't break with sandbox or admin tools.
-        /// This is not "enabled/disabled".
-        /// </description>
-        public bool LightSetup = false;
-
-        /// <description>
-        /// Gives an extra frame of blindness to reenable light manager during
-        /// </description>
-        public bool GraceFrame = false;
-    }
-}