Remove ecdsa feature of libp2p (#8374)

This compiles, is there any reason to keep `ecdsa`? CC @jxs


Co-Authored-By: Michael Sproul <michael@sigmaprime.io>

Cargo.lock

@@ -2236,7 +2236,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f55bf8e7b65898637379c1b74eb1551107c8294ed26d855ceb9fd1a09cfc9bc0"
 dependencies = [
  "const-oid",
- "pem-rfc7468",
  "zeroize",
 ]
 
@@ -2722,7 +2721,6 @@ dependencies = [
  "ff 0.13.1",
  "generic-array 0.14.7",
  "group 0.13.0",
- "pem-rfc7468",
  "pkcs8 0.10.2",
  "rand_core 0.6.4",
  "sec1 0.7.3",
@@ -5300,10 +5298,8 @@ dependencies = [
  "hkdf",
  "k256 0.13.4",
  "multihash",
- "p256",
  "quick-protobuf",
  "rand 0.8.5",
- "sec1 0.7.3",
  "sha2 0.10.8",
  "thiserror 2.0.12",
  "tracing",
@@ -6774,18 +6770,6 @@ dependencies = [
  "num-traits",
 ]
 
-[[package]]
-name = "p256"
-version = "0.13.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9863ad85fa8f4460f9c48cb909d38a0d689dba1f6f6988a5e3e0d31071bcd4b"
-dependencies = [
- "ecdsa 0.16.9",
- "elliptic-curve 0.13.8",
- "primeorder",
- "sha2 0.10.8",
-]
-
 [[package]]
 name = "pairing"
 version = "0.23.0"
@@ -6951,15 +6935,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "pem-rfc7468"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "88b39c9bfcfc231068454382784bb460aae594343fb030d46e9f50a645418412"
-dependencies = [
- "base64ct",
-]
-
 [[package]]
 name = "percent-encoding"
 version = "2.3.1"
@@ -7182,15 +7157,6 @@ dependencies = [
  "syn 2.0.100",
 ]
 
-[[package]]
-name = "primeorder"
-version = "0.13.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "353e1ca18966c16d9deb1c69278edbc5f194139612772bd9537af60ac231e1e6"
-dependencies = [
- "elliptic-curve 0.13.8",
-]
-
 [[package]]
 name = "primitive-types"
 version = "0.10.1"

beacon_node/lighthouse_network/Cargo.toml

@@ -64,7 +64,6 @@ features = [
     "plaintext",
     "secp256k1",
     "macros",
-    "ecdsa",
     "metrics",
     "quic",
     "upnp",