Remove the shared_cache fuzz target

Author: LucaCappelletti94

README.md

@@ -22,4 +22,4 @@ SQLite3MC is MIT licensed. The amalgamation also carries public-domain code (SQL
 
 A daily workflow in the [repository](https://github.com/LucaCappelletti94/sqlite3mc-src) opens a pull request for each new SQLite3MC release, taking the archive's checksum only from the release's Sigstore-signed `SHA256SUMS`. CI re-runs `upgrade.sh`, which checks that signature again before trusting the pinned checksum, to prove the vendored bytes match the pinned release. It also compiles the packaged sources natively and through `sqlite-wasm-rs`, and checks that each build opens the other's files in every cipher, under Node and in headless Chrome and Firefox, on OPFS too.
 
-CI also runs SQLite3MC's own tests, a rekey of every cipher and SQLite's TCL suite through the shipped amalgamation, once plainly and once under the address and undefined-behaviour sanitizers, with every expected failure named and explained. Six fuzz targets in `fuzz/` run on every pull request and daily through `ClusterFuzzLite`: a self-consistency check across the six native cipher schemes, and dedicated targets for rekeying, `journal_mode=WAL`, `ATTACH DATABASE`, the `sqlite3_backup_*` API, and shared-cache mode.
+CI also runs SQLite3MC's own tests, a rekey of every cipher and SQLite's TCL suite through the shipped amalgamation, once plainly and once under the address and undefined-behaviour sanitizers, with every expected failure named and explained. Five fuzz targets in `fuzz/` run on every pull request and daily through `ClusterFuzzLite`: a self-consistency check across the six native cipher schemes, and dedicated targets for rekeying, `journal_mode=WAL`, `ATTACH DATABASE` and the `sqlite3_backup_*` API. Shared-cache mode is left out, since SQLite discourages it and SQLite3MC supports it only as legacy ([#290](https://github.com/utelle/SQLite3MultipleCiphers/issues/290)).

fuzz/Cargo.toml

@@ -3,7 +3,7 @@ name = "sqlite3mc-src-fuzz"
 version = "0.0.0"
 edition = "2021"
 publish = false
-description = "Fuzzing SQLite3MC's own cipher schemes for self-consistency, its rekey support, its WAL journal mode, its ATTACH DATABASE support, its backup API, and its shared-cache mode"
+description = "Fuzzing SQLite3MC's own cipher schemes for self-consistency, its rekey support, its WAL journal mode, its ATTACH DATABASE support, and its backup API"
 
 [package.metadata]
 cargo-fuzz = true
@@ -51,13 +51,6 @@ test = false
 doc = false
 bench = false
 
-[[bin]]
-name = "shared_cache"
-path = "fuzz_targets/shared_cache.rs"
-test = false
-doc = false
-bench = false
-
 # The crate's table, minus unsafe_code (FFI) and missing_docs and cargo (never published).
 [lints.rust]
 rust_2018_idioms = { level = "warn", priority = -1 }