Revert "add --nupm to test in toolkit"

This reverts commit cb4f0e3.

.github/workflows/nupm-tests.yml

@@ -70,8 +70,7 @@ jobs:
         run: |
           "$env.NU_LIB_DIRS = [ (${{ steps.nu-setup.outputs.nupm_path }} | path dirname) ]"
             | save --force /tmp/env.nu
-          let res = nu --commands --env-config /tmp/env.nu "
+          nu --commands --env-config /tmp/env.nu "
             use toolkit.nu
             toolkit test --verbose
           "
-          print $res

toolkit.nu

@@ -7,7 +7,6 @@ use std repeat
 export def "test" [
     pattern?: string = "" # the pattern a test name should match to run
     --verbose # show the output of each tests
-    --nupm: path = "nupm" # the Nupm module to use
 ]: nothing -> nothing {
     let command = if $verbose {
         $"nupm test ($pattern) --show-stdout"
@@ -16,7 +15,7 @@ export def "test" [
     }
 
     # NOTE: this is for the CI to pass without installing Nupm
-    ^$nu.current-exe --env-config $nu.env-path --commands $"use ($nupm); ($command)"
+    ^$nu.current-exe --env-config $nu.env-path --commands $"use nupm; ($command)"
 }
 
 # install `nu-git-manager` with Nupm