fuzz/Cargo.toml: don't try to inherit lints

On line 25 we isolate the fuzzer to it's own minimal workspace.
Therefor there are no workplace lints to inherit and we get an error.

fuzz/Cargo.toml

@@ -7,9 +7,6 @@ edition = "2021"
 [package.metadata]
 cargo-fuzz = true
 
-[lints]
-workspace = true
-
 [dependencies]
 libfuzzer-sys = "0.4.9"