Fix: remove unnecessary r#"..."# (#8670) (#9764)

<!--
if this PR closes one or more issues, you can automatically link the PR
with
them by using one of the [*linking
keywords*](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword),
e.g.
- this PR should close #xxxx
- fixes #xxxx

you can also mention related issues, PRs or discussions!
-->

# Description
<!--
Thank you for improving Nushell. Please, check our [contributing
guide](../CONTRIBUTING.md) and talk to the core team before making major
changes.

Description of your pull request goes here. **Provide examples and/or
screenshots** if your changes affect the user experience.
-->
This PR is related to **Tests: clean up unnecessary use of cwd,
pipeline(), etc.
[#8670](https://github.com/nushell/nushell/issues/8670)**

- Removed the `r#"..."#` raw string literal syntax, which is unnecessary
when there are no special characters that need quoting from the tests
that use the `nu!` macro.
- `cwd:` and `pipeline()` has not changed


# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->

# Tests + Formatting
<!--
Don't forget to add tests that cover your changes.

Make sure you've run and fixed any issues with these commands:

- `cargo fmt --all -- --check` to check standard code formatting (`cargo
fmt --all` applies these changes)
- `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A
clippy::needless_collect -A clippy::result_large_err` to check that
you're using the standard code style
- `cargo test --workspace` to check that all tests pass
- `cargo run -- -c "use std testing; testing run-tests --path
crates/nu-std"` to run the tests for the standard library

> **Note**
> from `nushell` you can also use the `toolkit` as follows
> ```bash
> use toolkit.nu # or use an `env_change` hook to activate it
automatically
> toolkit check pr
> ```
-->

# After Submitting
<!-- If your PR had any user-facing changes, update [the
documentation](https://github.com/nushell/nushell.github.io) after the
PR is merged, if necessary. This will help us keep the docs up to date.
-->

crates/nu-command/tests/commands/into_int.rs

@@ -5,36 +5,28 @@ use nu_test_support::nu;
 
 #[test]
 fn into_int_filesize() {
-    let actual = nu!(r#"
-        echo 1kb | into int | each { |it| $it / 1000 }
-        "#);
+    let actual = nu!("echo 1kb | into int | each { |it| $it / 1000 }");
 
     assert!(actual.out.contains('1'));
 }
 
 #[test]
 fn into_int_filesize2() {
-    let actual = nu!(r#"
-        echo 1kib | into int | each { |it| $it / 1024 }
-        "#);
+    let actual = nu!("echo 1kib | into int | each { |it| $it / 1024 }");
 
     assert!(actual.out.contains('1'));
 }
 
 #[test]
 fn into_int_int() {
-    let actual = nu!(r#"
-        echo 1024 | into int | each { |it| $it / 1024 }
-        "#);
+    let actual = nu!("echo 1024 | into int | each { |it| $it / 1024 }");
 
     assert!(actual.out.contains('1'));
 }
 
 #[test]
 fn into_int_binary() {
-    let actual = nu!(r#"
-        echo 0x[01010101] | into int
-        "#);
+    let actual = nu!("echo 0x[01010101] | into int");
 
     assert!(actual.out.contains("16843009"));
 }