Use the defined func()->count() instead of manual counting

apps/dav/lib/CalDAV/CalDavBackend.php

apps/dav/lib/CardDAV/CardDavBackend.php

apps/files_sharing/lib/Command/CleanupRemoteStorages.php

apps/user_ldap/lib/Mapping/AbstractMapping.php

core/Command/Db/ConvertType.php

lib/base.php

lib/private/Comments/Manager.php

...ivate/DB/QueryBuilder/FunctionBuilder/FunctionBuilder.php

lib/private/Files/Cache/Propagator.php

lib/private/Files/Type/Loader.php

lib/private/Group/Database.php

lib/private/Lock/DBLockingProvider.php

lib/private/SystemTag/SystemTagObjectMapper.php

lib/private/User/Manager.php

lib/public/DB/QueryBuilder/IFunctionBuilder.php

tests/lib/Authentication/Token/DefaultTokenMapperTest.php

tests/lib/Authentication/Token/PublicKeyTokenMapperTest.php

tests/lib/DB/QueryBuilder/ExpressionBuilderTest.php

tests/lib/Repair/CleanTagsTest.php

tests/lib/Repair/RemoveRootSharesTest.php