XMB背景shader移除自己声明的lerp方法,使用系统lerp方法

AxibugEmuOnline.Client/Assets/Script/UI/XMBBackGround.shader

@@ -82,10 +82,6 @@
             float4 _MainTex_ST;           
             float4 _MainTex_TexelSize;           
 
-            float3 lerp(float3 color1, float3 color2, float value)
-            {
-	            return value * (color2 - color1) + color1;
-            }
             float wave(float x, float frequency, float speed, float midHeight, float maxHeight)
             {
                 return (sin(frequency * (x + speed * (((1. - (pow(cos(0.002 * (_Time.y + 400.)), 2.) + 1.) / 2.) + .1) * 2048.))) * (maxHeight - midHeight)) + midHeight;