upgrade to unity 6.1

Assets/ThirdParty/TextMesh Pro/Shaders/TMPro_Properties.cginc

@@ -66,11 +66,6 @@ uniform float		_MaskID;
 uniform sampler2D	_MaskTex;
 uniform float4		_MaskCoord;
 uniform float4		_ClipRect;	// bottom left(x,y) : top right(z,w)
-//uniform float		_MaskWipeControl;
-//uniform float		_MaskEdgeSoftness;
-//uniform fixed4		_MaskEdgeColor;
-//uniform bool		_MaskInverse;
-
 uniform float		_MaskSoftnessX;
 uniform float		_MaskSoftnessY;