MINOR: [Dev][Archery][Integration] Remove debug prints (apache#44140)

### Rationale for this change

apache#44099 included debug prints.

### What changes are included in this PR?

Remove debug prints.

### Are these changes tested?

Yes.

### Are there any user-facing changes?

No.

Authored-by: Sutou Kouhei <kou@clear-code.com>
Signed-off-by: Sutou Kouhei <kou@clear-code.com>

dev/archery/archery/integration/runner.py

@@ -586,9 +586,7 @@ def run_all_tests(with_cpp=True, with_java=True, with_js=True,
  run_c_data=False, tempdir=None, target_languages="",
  **kwargs):
  tempdir = tempdir or tempfile.mkdtemp(prefix='arrow-integration-')
- print(["before", target_languages])
  target_languages = list(filter(len, target_languages.split(",")))
- print(["after", target_languages])
 
  testers: List[Tester] = []
  other_testers: List[Tester] = []