Revert "Support aggregation of attributes from multiple databases" #183

Job	Run time
PHP-Linter (8.1) / linter	12s
PHP-Linter (8.3) / linter	9s
PHP-Linter (8.2) / linter	16s
Linter / json-linter	33s
PHP-Linter (8.4) / linter	14s
Linter / yaml-linter	5s
Linter / ecmascript-linter	-1s
Linter / style-linter	-1s
Unit tests, PHP 8.3, windows-latest	55s
Unit tests, PHP 8.5, windows-latest	48s
Unit tests, PHP 8.5, ubuntu-latest	19s
Unit tests, PHP 8.4, windows-latest	50s
Unit tests, PHP 8.2, ubuntu-latest	24s
Unit tests, PHP 8.4, ubuntu-latest	25s
Unit tests, PHP 8.2, windows-latest	55s
Unit tests, PHP 8.3, ubuntu-latest	32s
Code coverage	0s
Quality control	0s
Security checks	0s
Cleanup artifacts	0s
	6m 35s

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