fix(tests) fixes for reachy2 tests; removing reachy2 references from the script

tests/cameras/test_reachy2_camera.py

@@ -23,6 +23,8 @@ import pytest
 from lerobot.cameras.reachy2_camera import Reachy2Camera, Reachy2CameraConfig
 from lerobot.errors import DeviceNotConnectedError
 
+pytest.importorskip("reachy2_sdk")
+
 PARAMS = [
     ("teleop", "left"),
     ("teleop", "right"),

tests/robots/test_reachy2.py

@@ -51,6 +51,8 @@ PARAMS = [
     {"with_left_teleop_camera": False, "with_torso_camera": True},
 ]
 
+pytest.importorskip("reachy2_sdk")
+
 
 def _make_reachy2_sdk_mock():
     class JointSpy:

tests/teleoperators/test_reachy2_teleoperator.py

@@ -28,6 +28,8 @@ from lerobot.teleoperators.reachy2_teleoperator import (
     Reachy2TeleoperatorConfig,
 )
 
+pytest.importorskip("reachy2_sdk")
+
 # {lerobot_keys: reachy2_sdk_keys}
 REACHY2_JOINTS = {
     **REACHY2_NECK_JOINTS,