spirv: hide deref vecs to fix dead code warnings

Author: Firestar99

src/deref.rs

@@ -1,37 +1,35 @@
-#[cfg(not(feature = "scalar-math"))]
-#[cfg_attr(target_arch = "spirv", repr(simd))]
-#[cfg_attr(not(target_arch = "spirv"), repr(C))]
+#[cfg(not(any(feature = "scalar-math", target_arch = "spirv")))]
+#[repr(C)]
 pub struct Vec3<T> {
     pub x: T,
     pub y: T,
     pub z: T,
 }
 
-#[cfg(not(feature = "scalar-math"))]
-#[cfg_attr(target_arch = "spirv", repr(simd))]
-#[cfg_attr(not(target_arch = "spirv"), repr(C))]
+#[cfg(not(any(feature = "scalar-math", target_arch = "spirv")))]
+#[repr(C)]
 pub struct Vec4<T> {
     pub x: T,
     pub y: T,
     pub z: T,
     pub w: T,
 }
 
-#[cfg(not(feature = "scalar-math"))]
-#[cfg_attr(not(target_arch = "spirv"), repr(C))]
+#[cfg(not(any(feature = "scalar-math", target_arch = "spirv")))]
+#[repr(C)]
 pub struct Cols2<V> {
     pub x_axis: V,
     pub y_axis: V,
 }
 
-#[cfg_attr(not(target_arch = "spirv"), repr(C))]
+#[repr(C)]
 pub struct Cols3<V> {
     pub x_axis: V,
     pub y_axis: V,
     pub z_axis: V,
 }
 
-#[cfg_attr(not(target_arch = "spirv"), repr(C))]
+#[repr(C)]
 pub struct Cols4<V> {
     pub x_axis: V,
     pub y_axis: V,