[SPARK-31231][BUILD] Unset setuptools version in pip packaging test

### What changes were proposed in this pull request?

This PR unsets `setuptools` version in CI. This was fixed in the 0.46.1.2+ `setuptools` - pypa/setuptools#2046. `setuptools` 0.46.1.0 and 0.46.1.1 still have this problem.

### Why are the changes needed?

To test the latest setuptools out to see if users can actually install and use it.

### Does this PR introduce any user-facing change?

No.

### How was this patch tested?

Jenkins will test.

Closes apache#28111 from HyukjinKwon/SPARK-31231-revert.

Authored-by: HyukjinKwon <[email protected]>
Signed-off-by: HyukjinKwon <[email protected]>

Author: HyukjinKwon

dev/run-pip-tests

@@ -76,7 +76,7 @@ for python in "${PYTHON_EXECS[@]}"; do
     VIRTUALENV_PATH="$VIRTUALENV_BASE"/$python
     rm -rf "$VIRTUALENV_PATH"
     if [ -n "$USE_CONDA" ]; then
-      conda create -y -p "$VIRTUALENV_PATH" python=$python numpy pandas pip "setuptools<46.1.0"
+      conda create -y -p "$VIRTUALENV_PATH" python=$python numpy pandas pip setuptools
       source activate "$VIRTUALENV_PATH"
     else
       mkdir -p "$VIRTUALENV_PATH"