L2SS-205: Ensure lofar-device-base install general packages

These include anything that is required to run setup.py or __init__.py
as these are executed outside the context of packaging.

docker-compose/lofar-device-base/lofar-requirements.txt

-# Do not put tangostationcontrol dependencies here
-astropy
+# Do not put tangostationcontrol dependencies here, only setup.py / __init__.py
+GitPython >= 3.1.24 # BSD

tangostationcontrol/requirements.txt

@@ -5,7 +5,6 @@
 asyncua >= 0.9.90 # LGPLv3
 PyMySQL[rsa] >= 1.0.2 # MIT
 sqlalchemy >= 1.4.26 #MIT
-GitPython >= 3.1.24 # BSD
 snmp >= 0.1.7 # GPL3
 h5py >= 3.5.0 # BSD
 psutil >= 5.8.0 # BSD