minimize ZhPort (preparing to remove)

src/qibolab/instruments/zhinst.py

@@ -115,13 +115,6 @@ def select_pulse(pulse, pulse_type):
         )
 
 
-@dataclass
-class ZhPort(Port):
-    name: Tuple[str, str]
-    offset: float = 0.0
-    power_range: int = 0
-
-
 class ZhPulse:
     """Zurich pulse from qibolab pulse translation."""
 
@@ -270,6 +263,12 @@ def select_sweeper(sweeper):
             )
 
 
+# FIXME: not needed for any logic inside the driver. Only needed to meet the expectations set by parent class Controller.
+@dataclass
+class ZhPort:
+    name: str
+
+
 class Zurich(Controller):
     """Zurich driver main class."""