[Build] Warnings generated by `impl_remote!`

[kaimast]

I see a lot of these warnings related to impl_remote! when building certain crates in snarkVM. The following is from a call to cargo test --package=snarkvm-synthesizer-program sha

warning: associated functions `store_bytes` and `remote_fetch` are never used
   --> parameters/src/macros.rs:48:12
    |
48  |         fn store_bytes(buffer: &[u8], file_path: &std::path::Path) -> Result<(), $crate::errors::ParameterError> {
    |            ^^^^^^^^^^^
...
72  |         fn remote_fetch(buffer: &mut Vec<u8>, url: &str) -> Result<(), $crate::errors::ParameterError> {
    |            ^^^^^^^^^^^^
...
355 |         impl $name {
    |         ---------- associated functions in this implementation
    |
   ::: parameters/src/testnet/mod.rs:179:1
    |
179 | impl_remote!(InclusionV0Prover, REMOTE_URL, "resources/", "inclusion", "prover", "credits_v0");
    | ---------------------------------------------------------------------------------------------- in this macro invocation
    |
    = note: this warning originates in the macro `impl_store_and_remote_fetch` which comes from the expansion of the macro `impl_remote` (in Nightly builds, run with -Z macro-backtrace for more info)

[kaimast]

I also see these warnings in benchmark runs

warning: unused variable: `expected_size`
   --> parameters/src/macros.rs:364:21
    |
364 |                 let expected_size: usize =
    |                     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected_size`
    |
   ::: parameters/src/canary/mod.rs:25:1
    |
25  | impl_remote!(BondPublicProver, REMOTE_URL, "resources/", "bond_public", "prover", "credits");
    | -------------------------------------------------------------------------------------------- in this macro invocation
    |
    = note: `#[warn(unused_variables)]` on by default
    = note: this warning originates in the macro `impl_remote` (in Nightly builds, run with -Z macro-backtrace for more info)