diff --git a/trezor_agent/gpg/decode.py b/trezor_agent/gpg/decode.py
index ec896f3..fa7c1d8 100644
--- a/trezor_agent/gpg/decode.py
+++ b/trezor_agent/gpg/decode.py
@@ -1,6 +1,5 @@
 """Decoders for GPG v2 data structures."""
 import base64
-import copy
 import functools
 import hashlib
 import io
@@ -287,28 +286,6 @@ def digest_packets(packets, hasher):
     return hasher.digest()
 
 
-def collect_packets(packets, types_to_collect):
-    """Collect specified packet types into their leading packet."""
-    packet = None
-    result = []
-    for p in packets:
-        if p['type'] in types_to_collect:
-            packet.setdefault(p['type'], []).append(p)
-        else:
-            packet = copy.deepcopy(p)
-            result.append(packet)
-    return result
-
-
-def parse_public_keys(stream):
-    """Parse GPG public key into hierarchy of packets."""
-    packets = list(parse_packets(stream))
-    packets = collect_packets(packets, {'signature'})
-    packets = collect_packets(packets, {'user_id', 'user_attribute'})
-    packets = collect_packets(packets, {'subkey'})
-    return packets
-
-
 HASH_ALGORITHMS = {
     1: 'md5',
     2: 'sha1',
diff --git a/trezor_agent/gpg/tests/test_decode.py b/trezor_agent/gpg/tests/test_decode.py
index 5480f80..8f59726 100644
--- a/trezor_agent/gpg/tests/test_decode.py
+++ b/trezor_agent/gpg/tests/test_decode.py
@@ -120,5 +120,5 @@ def public_key_path(request):
 
 def test_gpg_files(public_key_path):  # pylint: disable=redefined-outer-name
     with open(public_key_path, 'rb') as f:
-        keys = decode.parse_public_keys(f)
-        assert len(keys) > 0
+        packets = list(decode.parse_packets(f))
+        assert len(packets) > 0