Broadly remove deprecated core classes and methods [SPR-14430]

[spring-projects-issues]

Juergen Hoeller opened SPR-14430 and commented

5.0 is once again an opportunity to broadly remove deprecated classes and methods from our core API. We're still going to leave a few exceptions where it is about feature guidance but not where it is just about outdated API calls.

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Issue Links:

• Drop deprecated dependencies on Log4j, JRuby, JExcel, Burlap, Commons Pool/DBCP [SPR-14429] #19000 Drop deprecated dependencies on Log4j, JRuby, JExcel, Burlap, Commons Pool/DBCP