chore: cleanup Cargo.toml, add copyright to rs file

clarity/fuzz/Cargo.toml

@@ -31,21 +31,3 @@ name = "fuzz_sanitize"
 path = "fuzz_targets/fuzz_sanitize.rs"
 test = false
 doc = false
-
-# [[bin]]
-# name = "fuzz_serialize"
-# path = "fuzz_targets/fuzz_serialize.rs"
-# test = false
-# doc = false
-
-# [[bin]]
-# name = "fuzz_least_supertype"
-# path = "fuzz_targets/fuzz_least_supertype.rs"
-# test = false
-# doc = false
-
-# [[bin]]
-# name = "fuzz_admits_type"
-# path = "fuzz_targets/fuzz_admits_type.rs"
-# test = false
-# doc = false

clarity/fuzz/fuzz_targets/fuzz_sanitize.rs

@@ -1,3 +1,18 @@
+// Copyright (C) 2023 Stacks Open Internet Foundation
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
 #![no_main]
 
 use arbitrary::Arbitrary;