benchmark: remove xxh64 and crc32 benchmarking

Likely we will use them less or not at all in future.

src/borg/archiver/benchmark_cmd.py

@@ -213,22 +213,6 @@ class BenchmarkMixIn:
             else:
                 print(f"{spec:<24} {format_file_size(size):<10} {dt:.3f}s")
 
-        from xxhash import xxh64
-        from zlib import crc32
-
-        if not args.json:
-            print("Non-cryptographic checksums / hashes ===========================")
-        else:
-            result["checksums"] = []
-        size = 1000000000
-        tests = [("xxh64", lambda: xxh64(random_10M).digest()), ("crc32 (zlib)", lambda: crc32(random_10M))]
-        for spec, func in tests:
-            dt = timeit(func, number=number_default)
-            if args.json:
-                result["checksums"].append({"algo": spec, "size": size, "time": dt})
-            else:
-                print(f"{spec:<24} {format_file_size(size):<10} {dt:.3f}s")
-
         from ..crypto.low_level import hmac_sha256, blake2b_256
 
         if not args.json:

src/borg/testsuite/archiver/benchmark_cmd_test.py

@@ -50,7 +50,6 @@ def test_benchmark_cpu(archiver, monkeypatch):
     output = cmd(archiver, "benchmark", "cpu")
     # verify all section headers appear in the plain-text output
     assert "Chunkers" in output
-    assert "Non-cryptographic checksums / hashes" in output
     assert "Cryptographic hashes / MACs" in output
     assert "Encryption" in output
     assert "Compression" in output
@@ -63,7 +62,7 @@ def test_benchmark_cpu_json(archiver, monkeypatch):
     result = json.loads(output)
     assert isinstance(result, dict)
     # categories with "size" field (bytes)
-    for category in ["chunkers", "checksums", "hashes", "encryption"]:
+    for category in ["chunkers", "hashes", "encryption"]:
         assert isinstance(result[category], list)
         assert len(result[category]) > 0
         for entry in result[category]: