remove work lib logics

[kaibocai]

Remove the logics for customer opt-in. Right now, customer is required to provide their own lib directory.
Question to be clarified: one unit test failed due to the code change. Since this unit test didn't provide a it's lib directory.
Proposed solution: copy the lib folder to target folder when build the package. This lib folder will work as a customer lib directory for unit tests.

[TsuyoshiUshio]

Hi @kaibocai
I did some research. The spec will be like this.

To give the context, when we are Java8, we switched the order of the read 3rd party library and azure functions library by the environment variable FUNCTIONS_WORKER_JAVA_LOAD_APP_LIBS. #381

It is the only feature for Java8. So that we don't need it for V4.
If the customer have a lib directory, load the customer libraries. If they don't have it, it's ok.
https://docs.microsoft.com/en-us/azure/azure-functions/functions-reference-java?tabs=bash%2Cconsumption#third-party-libraries

So that you need to keep this logic.
https://github.com/Azure/azure-functions-java-worker/pull/443/files#diff-8ba6922619e77013eed80700fc98dcbe05895acc55b1d705533074889f5528a0L92-L95

[kaibocai]

Hi @kaibocai
I did some research. The spec will be like this.

To give the context, when we are Java8, we switched the order of the read 3rd party library and azure functions library by the environment variable FUNCTIONS_WORKER_JAVA_LOAD_APP_LIBS. #381

It is the only feature for Java8. So that we don't need it for V4.
If the customer have a lib directory, load the customer libraries. If they don't have it, it's ok.
https://docs.microsoft.com/en-us/azure/azure-functions/functions-reference-java?tabs=bash%2Cconsumption#third-party-libraries

So that you need to keep this logic.
https://github.com/Azure/azure-functions-java-worker/pull/443/files#diff-8ba6922619e77013eed80700fc98dcbe05895acc55b1d705533074889f5528a0L92-L95

Make sense. Thank you!