Remove leftover webgpu define in rasterize

Author: ArthurBrussee

crates/brush-render/src/render.rs

@@ -342,7 +342,7 @@ impl SplatForward<Self> for MainBackendBase {
 
         // Compile the kernel, including/excluding info for backwards pass.
         // see the BWD_INFO define in the rasterize shader.
-        let raster_task = Rasterize::task(bwd_info, cfg!(target_family = "wasm"));
+        let raster_task = Rasterize::task(bwd_info);
 
         // SAFETY: Kernel checked to have no OOB, bounded loops.
         unsafe {

crates/brush-render/src/shaders.rs

@@ -20,7 +20,6 @@ pub struct MapGaussiansToIntersect {
 #[wgsl_kernel(source = "src/shaders/rasterize.wgsl")]
 pub struct Rasterize {
     pub bwd_info: bool,
-    pub webgpu: bool,
 }
 
 // Re-export helper types and constants from the kernel modules that use them