[vk_texture_cache] drop depth comparison sampler fallback (#4408)

- [x] I have read and followed the [Contribution Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/CONTRIBUTING.md#code-contributions).
- [x] I have read and followed the [AI Policy](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/AI.md)
- [x] I have read and followed the [Coding Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/Coding.md) to the best of my ability.

-------------------

This fixes the flashlight in Alan Wake.

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4408
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>

src/video_core/renderer_vulkan/vk_texture_cache.cpp

@@ -2850,8 +2850,6 @@ Sampler::VariantKey Sampler::MakeKey(const ImageView& image_view, bool is_depth)
     VariantKey key{};
     key.reduce_anisotropy = has_added_anisotropy && !image_view.SupportsAnisotropy();
     key.force_nearest = has_linear_filtering && IsPixelFormatInteger(image_view.format);
-    key.drop_depth_comparison =
-        is_depth && has_depth_comparison && !image_view.SupportsDepthComparison();
     key.drop_reduction = has_minmax_reduction && !image_view.SupportsMinmaxFilter();
     key.drop_custom_border = has_custom_border_colors && image_view.RequiresBorderColorFormat();
     key.srgb_border = has_srgb_border_color && IsPixelFormatSRGB(image_view.format);
@@ -2929,9 +2927,6 @@ VkSampler Sampler::Emplace(VariantKey key) {
         create_info.anisotropyEnable = static_cast<VkBool32>(default_anisotropy > 1.0f);
         create_info.maxAnisotropy = default_anisotropy;
     }
-    if (key.drop_depth_comparison) {
-        create_info.compareEnable = VK_FALSE;
-    }
     if (!custom_border) {
         create_info.borderColor = ConvertBorderColor(color);
     }

src/video_core/renderer_vulkan/vk_texture_cache.h

@@ -536,7 +536,6 @@ private:
     struct VariantKey {
         bool reduce_anisotropy;
         bool force_nearest;
-        bool drop_depth_comparison;
         bool drop_reduction;
         bool drop_custom_border;
         bool srgb_border;