Clean legacy code (#3469)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

shaders/fill_outline.vertex.glsl

@@ -1,7 +1,34 @@
-layout (location = 0) in vec2 a_pos;
+layout (std140) uniform GlobalPaintParamsUBO {
+    highp vec2 u_pattern_atlas_texsize;
+    highp vec2 u_units_to_pixels;
+    highp vec2 u_world_size;
+    highp float u_camera_to_center_distance;
+    highp float u_symbol_fade_change;
+    highp float u_aspect_ratio;
+    highp float u_pixel_ratio;
+    highp float u_map_zoom;
+    lowp float global_pad1;
+};
 
-uniform mat4 u_matrix;
-uniform vec2 u_world;
+layout (std140) uniform FillOutlineDrawableUBO {
+    highp mat4 u_matrix;
+    // Interpolations
+    highp float u_outline_color_t;
+    highp float u_opacity_t;
+    lowp float drawable_pad1;
+    lowp float drawable_pad2;
+};
+
+layout (std140) uniform FillEvaluatedPropsUBO {
+    highp vec4 u_color;
+    highp vec4 u_outline_color;
+    highp float u_opacity;
+    highp float u_fade;
+    highp float u_from_scale;
+    highp float u_to_scale;
+};
+
+layout (location = 0) in vec2 a_pos;
 
 out vec2 v_pos;
 
@@ -13,5 +40,5 @@ void main() {
     #pragma mapbox: initialize lowp float opacity
 
     gl_Position = u_matrix * vec4(a_pos, 0, 1);
-    v_pos = (gl_Position.xy / gl_Position.w + 1.0) / 2.0 * u_world;
+    v_pos = (gl_Position.xy / gl_Position.w + 1.0) / 2.0 * u_world_size;
 }