Merge rust-bitcoin/rust-miniscript#290: Remove fuzztaget and cleanup psbt finalizer

a142ab40e40fd6f302bb59b04dc3441c2a724465 Remove fuzztaget (sanket1729)

Pull request description:

ACKs for top commit:
  apoelstra:
    ACK a142ab40e40fd6f302bb59b04dc3441c2a724465

Tree-SHA512: 44052c360a3a3008244b46866b29e52ff946497a0c5c2526b605562a71f01167f68880c8bbafbbdce45dcddba55e356470652600e1b06f54c3021787fb72c8bc

Author: heap-coder

Cargo.toml

@@ -7,7 +7,6 @@ description = "Miniscript: a subset of Bitcoin Script designed for analysis"
 license = "CC0-1.0"
 
 [features]
-fuzztarget = []
 compiler = []
 trace = []
 unstable = []

fuzz/Cargo.toml

@@ -15,7 +15,7 @@ honggfuzz_fuzz = ["honggfuzz"]
 honggfuzz = { version = "0.5", optional = true }
 afl = { version = "0.8", optional = true }
 regex = { version = "1.4"}
-miniscript = { path = "..", features = ["fuzztarget", "compiler"] }
+miniscript = { path = "..", features = ["compiler"] }
 
 # Prevent this from interfering with workspaces
 [workspace]