Remove box-muller shader

shaders/box-muller.frag

@@ -1,31 +0,0 @@
-#version 330
-
-precision mediump float;
-
-uniform vec2 resolution;
-uniform float time;
-uniform vec2 mouse;
-uniform sampler2D tex;
-
-in vec2 uv;
-in vec4 color;
-out vec4 out_color;
-
-#define BM_RANGE 3.0
-#define PI 3.14159265359
-
-void main(void) {
-    float k = (sin(time) + 1.0) / 2.0;
-    float a = 2.0*PI*k;
-    float b = -2.0*k;
-    float x = sqrt(b*log(uv.x)) * cos(a * uv.y);
-    float y = sqrt(b*log(uv.x)) * sin(a * uv.y);
-
-    if (-BM_RANGE <= x && x < BM_RANGE && -BM_RANGE <= y && y < BM_RANGE) {
-        x = (x + BM_RANGE) / (2.0 * BM_RANGE);
-        y = (y + BM_RANGE) / (2.0 * BM_RANGE);
-        out_color = texture(tex, vec2(x, y));
-    } else {
-        out_color = vec4(0.0);
-    }
-}