Remove ddev size create-dashboard (DataDog#20766)

* remove

* changelog

---------

Co-authored-by: Juanpe Araque <juanpedro.araque@datadoghq.com>

Author: lucia-sb

ddev/changelog.d/20766.removed

@@ -0,0 +1 @@
+Remove `ddev size create-dashboard` 

ddev/src/ddev/cli/size/__init__.py

@@ -4,7 +4,6 @@
 
 import click
 
-from ddev.cli.size.create_dashboard import create_dashboard
 from ddev.cli.size.diff import diff
 from ddev.cli.size.status import status
 from ddev.cli.size.timeline import timeline
@@ -26,7 +25,6 @@ def size():
 size.add_command(status)
 size.add_command(diff)
 size.add_command(timeline)
-size.add_command(create_dashboard)
 
 if __name__ == "__main__":
     size()