Remove redundant description on experimental flag.

src/libstore/local-store.hh

@@ -59,6 +59,7 @@ struct LocalStoreConfig : virtual LocalFSStoreConfig
           **Warning**
           Do not use this unless the filesystem is read-only.
           Using it when the filesystem is writable can cause incorrect query results or corruption errors if the database is changed by another process.
+          While the filesystem the database resides on might appear to be read-only, consider whether another user or system might have write access to it.
         )"};
 
     const std::string name() override { return "Local Store"; }

src/libutil/experimental-features.cc

@@ -226,14 +226,6 @@ constexpr std::array<ExperimentalFeatureDetails, 15> xpFeatureDetails = {{
         .name = "read-only-local-store",
         .description = R"(
             Allow the use of the `read-only` parameter in local store URIs.
-
-            Set this parameter to `true` to allow stores with databases on read-only filesystems to be opened for querying; ordinarily Nix will refuse to do this.
-
-            This is because SQLite requires write access to the database file to perform the file locking operations necessary for safe concurrent access.
-            When `read-only` is set to `true`, the database will be opened in immutable mode.
-
-            Under this mode, SQLite will not do any locking at all, so you should be certain that the database will not be changed.
-            While the filesystem the database resides on might be read-only to this process, consider whether another user, process, or system, might have write access to it.
         )",
     },
 }};