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

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# Description
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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
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# Tests + Formatting
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crates/nu-command/tests/commands/reduce.rs

@@ -18,11 +18,11 @@ fn reduce_table_column() {
 #[test]
 fn reduce_table_column_with_path() {
     let actual = nu!(pipeline(
-        r#"
+        "
         [{month:2,total:30}, {month:3,total:10}, {month:4,total:3}, {month:5,total:60}]
         | reduce -f 20 { |it, acc| $it.total + $acc ** 1.05}
         | into string -d 1
-        "#
+        "
     ));
 
     assert_eq!(actual.out, "180.6");
@@ -31,10 +31,10 @@ fn reduce_table_column_with_path() {
 #[test]
 fn reduce_rows_example() {
     let actual = nu!(pipeline(
-        r#"
+        "
         [[a,b]; [1,2] [3,4]]
         | reduce -f 1.6 { |it, acc| $acc * ($it.a | into int) + ($it.b | into int) }
-        "#
+        "
     ));
 
     assert_eq!(actual.out, "14.8");
@@ -43,14 +43,14 @@ fn reduce_rows_example() {
 #[test]
 fn reduce_with_return_in_closure() {
     let actual = nu!(pipeline(
-        r#"
+        "
         [1, 2] | reduce --fold null { |it, state|
             if $it == 1 {
                 return 10
             };
             return ($it * $state)
         }
-        "#
+        "
     ));
 
     assert_eq!(actual.out, "20");
@@ -60,11 +60,11 @@ fn reduce_with_return_in_closure() {
 #[test]
 fn reduce_enumerate_example() {
     let actual = nu!(pipeline(
-        r#"
+        "
         echo one longest three bar | enumerate
         | reduce { |it, acc| if ($it.item | str length) > ($acc.item | str length) {echo $it} else {echo $acc}}
         | get index
-        "#
+        "
     ));
 
     assert_eq!(actual.out, "1");
@@ -73,12 +73,12 @@ fn reduce_enumerate_example() {
 #[test]
 fn reduce_enumerate_integer_addition_example() {
     let actual = nu!(pipeline(
-        r#"
+        "
         echo [1 2 3 4]
         | enumerate
         | reduce { |it, acc| { index: ($it.index) item: ($acc.item + $it.item)} }
         | get item
-        "#
+        "
     ));
 
     assert_eq!(actual.out, "10");
@@ -87,7 +87,7 @@ fn reduce_enumerate_integer_addition_example() {
 #[test]
 fn folding_with_tables() {
     let actual = nu!(pipeline(
-        r#"
+        "
         echo [10 20 30 40]
         | reduce -f [] { |it, acc|
             with-env [value $it] {
@@ -95,7 +95,7 @@ fn folding_with_tables() {
             }
           }
         | math sum
-        "#
+        "
     ));
 
     assert_eq!(actual.out, "1000");
@@ -104,9 +104,7 @@ fn folding_with_tables() {
 #[test]
 fn error_reduce_fold_type_mismatch() {
     let actual = nu!(pipeline(
-        r#"
-        echo a b c | reduce -f 0 { |it, acc| $acc + $it }
-        "#
+        "echo a b c | reduce -f 0 { |it, acc| $acc + $it }"
     ));
 
     assert!(actual.err.contains("mismatch"));
@@ -114,11 +112,7 @@ fn error_reduce_fold_type_mismatch() {
 
 #[test]
 fn error_reduce_empty() {
-    let actual = nu!(pipeline(
-        r#"
-        reduce { |it, acc| $acc + $it }
-        "#
-    ));
+    let actual = nu!(pipeline("reduce { |it, acc| $acc + $it }"));
 
     assert!(actual.err.contains("needs input"));
 }
@@ -126,9 +120,7 @@ fn error_reduce_empty() {
 #[test]
 fn enumerate_reduce_example() {
     let actual = nu!(pipeline(
-        r#"
-        [one longest three bar] | enumerate | reduce {|it, acc| if ($it.item | str length) > ($acc.item | str length) { $it } else { $acc }} | get index
-        "#
+        "[one longest three bar] | enumerate | reduce {|it, acc| if ($it.item | str length) > ($acc.item | str length) { $it } else { $acc }} | get index"
     ));
 
     assert_eq!(actual.out, "1");