fix: actually check if remote mode is available

This used to make sense, but when we moved the BPlan import
to a separate file, it stopped making sense.

Signed-off-by: Sofia Donato Ferreira <[email protected]>

Author: flowln

src/sophys/cli/core/magics/plan_magics.py

@@ -13,10 +13,8 @@
 
 from . import in_debug_mode, NamespaceKeys, get_from_namespace, add_to_namespace
 
-try:
-    remote_control_available = True
-except ImportError:
-    remote_control_available = False
+
+remote_control_available = importlib.util.find_spec("bluesky_queueserver_api") is not None
 
 
 class ModeOfOperation(IntEnum):