MAINT: remove SQLite and AWI related stuff

src/main/java/caosdb/server/datatype/SQLiteDatatype.java

src/main/java/caosdb/server/jobs/extension/AWIBoxLoan.java

.../caosdb/server/jobs/extension/AWIBoxLoanCuratorEmail.java

...in/java/caosdb/server/jobs/extension/AWIBoxLoanModel.java

...ver/jobs/extension/AWIBoxLoanRequestLoanCuratorEmail.java

...r/jobs/extension/AWIBoxLoanRequestReturnCuratorEmail.java

src/main/java/caosdb/server/jobs/extension/JobException.java

.../java/caosdb/server/jobs/extension/SQLiteTransaction.java

...est/java/caosdb/server/jobs/extension/TestAWIBoxLoan.java