remove database backend #489 #1079

Job	Run time
Linting	35s
Pip Install 3.6 Test	7m 35s
Code Formatting	24s
Pip Install 3.7 Test	7m 57s
icatdb Generator Script Consistency Test	3m 53s
Pip Install 3.8 Test	7m 49s
Pip Install 3.9 Test	7m 48s
Dependency Safety	27s
Python 3.6 Build & Tests	14m 20s
Pip Install 3.10 Test	3m 49s
Python 3.7 Build & Tests	13m 58s
Python 3.8 Build & Tests	14m 1s
Python 3.9 Build & Tests	4m 40s
Python 3.10 Build & Tests	15m 37s
Docker	0s
	1h 42m 53s

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