Remove flaky timing assertion in profileEntityDecoding

CI machines have variable performance, so hard timing thresholds
cause spurious failures. Profiling tests should report data, not
fail based on absolute times.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: kylehowells

Tests/swift-justhtmlTests/ProfilingTests.swift

@@ -322,7 +322,7 @@ func loadSampleFile(_ name: String) throws -> String {
 		print("\nwikipedia_ww2.html has \(ampCount) potential entity references")
 	}
 
-	#expect(avgMs < 200, "Entity-heavy parsing should be under 200ms")
+	// Note: No timing assertion - CI machines have variable performance
 }
 
 @Test func profileDictionaryLookup() async throws {