Revert "Add explicit crc-fast 1.4 SIGILL detection test"

This reverts commit 7d0042f.

Author: vcjana

tools/ci-cdk/canary-lambda/examples/test_crc_fast.rs

@@ -435,33 +435,3 @@ async fn test_s3_canary() {
         fut.await.expect("joined").expect("success");
     }
 }
-
-// Explicit test for crc-fast 1.4 SIGILL issue
-// This will fail immediately on CPUs without AVX-512 support
-async fn test_checksum_algorithms() -> anyhow::Result<()> {
-    use aws_smithy_checksums::ChecksumAlgorithm;
-    
-    println!("Testing checksum algorithms (crc-fast 1.4 SIGILL detection)...");
-    
-    #[cfg(target_arch = "x86_64")]
-    {
-        println!("CPU Features - AVX-512F: {}, AVX-512VL: {}", 
-            is_x86_feature_detected!("avx512f"),
-            is_x86_feature_detected!("avx512vl"));
-    }
-    
-    let test_data = vec![0u8; 1024 * 1024]; // 1MB test data
-    
-    // These will SIGILL on x86_64 without AVX-512 if using crc-fast 1.4
-    println!("Computing CRC32...");
-    let _crc32 = aws_smithy_checksums::body::calculate(&test_data, &ChecksumAlgorithm::Crc32);
-    
-    println!("Computing CRC32C...");
-    let _crc32c = aws_smithy_checksums::body::calculate(&test_data, &ChecksumAlgorithm::Crc32C);
-    
-    println!("Computing CRC64NVME...");
-    let _crc64 = aws_smithy_checksums::body::calculate(&test_data, &ChecksumAlgorithm::Crc64Nvme);
-    
-    println!("All checksum algorithms work correctly!");
-    Ok(())
-}