remove unused fuzztarget feature

Author: apoelstra

Cargo.toml

@@ -18,7 +18,6 @@ json-contract = [ "serde_json" ]
     "secp256k1-zkp/use-serde",
     "actual-serde"
 ]
-"fuzztarget" = []
 
 [dependencies]
 bitcoin = "0.29.1"

fuzz/Cargo.toml

@@ -15,7 +15,7 @@ honggfuzz_fuzz = ["honggfuzz"]
 [dependencies]
 honggfuzz = { version = "0.5", optional = true, default-features = false }
 afl = { version = "0.11", optional = true }
-elements = { path = "..", features = ["fuzztarget", "serde"] }
+elements = { path = "..", features = ["serde"] }
 
 # Prevent this from interfering with workspaces
 [workspace]