fix: oops, remove gles feature from wgpu-hal's defaults

Totally my bad; this should not have landed. I was using it while
chasing down files to change in gfx-rs#3044. :<

wgpu-hal/Cargo.toml

@@ -27,7 +27,7 @@ rustdoc-args = ["--cfg", "docsrs"]
 [lib]
 
 [features]
-default = ["gles"]
+default = []
 metal = ["naga/msl-out", "block", "foreign-types"]
 vulkan = ["naga/spv-out", "ash", "gpu-alloc", "gpu-descriptor", "libloading", "smallvec"]
 gles = ["naga/glsl-out", "glow", "egl", "libloading"]