elliptic-curve: remove tap hack (#1838)

This is hopefully no longer relevant

Author: tarcieri

Cargo.lock

@@ -36,7 +36,6 @@ pkcs8 = { version = "0.11.0-rc.1", optional = true, default-features = false }
 sec1 = { version = "0.8.0-rc.4", optional = true, features = ["subtle", "zeroize"] }
 serdect = { version = "0.3", optional = true, default-features = false, features = ["alloc"] }
 serde_json = { version = "1.0.121", optional = true, default-features = false, features = ["alloc"] }
-tap = { version = "1.0.1", optional = true, default-features = false } # hack for minimal-versions support for `bits`
 
 [dev-dependencies]
 hex-literal = "1"
@@ -61,7 +60,7 @@ std = [
 ]
 
 arithmetic = ["group"]
-bits = ["arithmetic", "ff/bits", "dep:tap"]
+bits = ["arithmetic", "ff/bits"]
 dev = ["arithmetic", "dep:hex-literal", "pem", "pkcs8"]
 hash2curve = ["arithmetic", "digest"]
 ecdh = ["arithmetic", "digest", "dep:hkdf"]