Remove support for snake_case wgpu::Features.

Chromium has been updated so the fallback is no longer needed.

Bug: dawn:550
Change-Id: I25b054617fc054926e0eb850229f244ddc51bb61
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/100470
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Austin Eng <enga@chromium.org>
diff --git a/src/dawn/native/Features.cpp b/src/dawn/native/Features.cpp
index e43da12..d375b20 100644
--- a/src/dawn/native/Features.cpp
+++ b/src/dawn/native/Features.cpp
@@ -233,23 +233,6 @@
     if (iter != mFeatureNameToEnumMap.cend()) {
         return kFeatureNameAndInfoList[static_cast<size_t>(iter->second)].feature;
     }
-
-    // TODO(dawn:550): Remove this fallback logic when Chromium is updated.
-    constexpr std::array<std::pair<const char*, const char*>, 6> kReplacementsForDeprecatedNames = {
-        {
-            {"texture_compression_bc", "texture-compression-bc"},
-            {"depth_clamping", "depth-clamping"},
-            {"pipeline_statistics_query", "pipeline-statistics-query"},
-            {"shader_float16", "shader-float16"},
-            {"timestamp_query", "timestamp-query"},
-            {"multiplanar_formats", "multiplanar-formats"},
-        }};
-    for (const auto& [name, replacement] : kReplacementsForDeprecatedNames) {
-        if (strcmp(featureName, name) == 0) {
-            return FeatureNameToEnum(replacement);
-        }
-    }
-
     return Feature::InvalidEnum;
 }