Silence some compiler warnings about unused imports #883

Silence some compiler warnings about unused imports

Usage Workflow file

16 warnings

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2, actions-rs/toolchain@v1, actions-rs/cargo@v1. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The following actions uses Node.js version which is deprecated and will be forced to run on node20: actions/checkout@v2, actions-rs/toolchain@v1, actions-rs/cargo@v1. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

unused imports: `ExclusiveRange`, `InclusiveRange`

`rhai` (lib test) generated 1 warning (1 duplicate)

unused imports: `INT`, `LexError`, `ParseErrorType`

unused import: `rhai::Map`

`rhai` (test "parse_json") generated 2 warnings (run `cargo fix --test "parse_json"` to apply 2 suggestions)

unused import: `INT`

`rhai` (test "get_set") generated 1 warning (run `cargo fix --test "get_set"` to apply 1 suggestion)

method `get_component` is never used

`rhai` (test "build_type") generated 1 warning

`rhai` (test "serde") generated 1 warning (run `cargo fix --test "serde"` to apply 1 suggestion)

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/