Remove member and level in favor of a separate PR

README.md

@@ -32,8 +32,6 @@ The fields in the table below can be used in these parts of STAC documents:
 | forecast:duration            | string | If the forecast is not only for a specific instance in time but instead is for a certain period, you can specify the length here. Formatted as [ISO 8601 duration](https://en.wikipedia.org/wiki/ISO_8601#Durations), e.g. `PT3H` for a 3-hour accumulation. If not given, assumes that the forecast is for an instance in time as if this was set to `PT0S` (0 seconds). |
 | forecast:param               | string | Name of the model parameter that corresponds to the data, e.g. `T` (temperature), `P` (pressure), `U`/`V`/`W` (windspeed in three directions). |
 | forecast:mode                | string | Denotes whether the data corresponds to the control run or perturbed runs. Allowed values are `ctrl` or `perturb`. |
-| forecast:member              | integer | Specifies the member (sample number) of perturbed runs, e.g. `1`. |
-| forecast:level               | integer | Index of the vertical level of the height coordinate system used in the forecast model, e.g. `4`. |
 
 ### Additional Fields from other extensions