SpringBoot Remove deprecated support for FailureAnalyzer setter injection

See https://github.com/spring-projects/spring-boot/issues/29811

Comment From: Wzy19930507

Hi, @scottfrederick, @wilkinsona, I'm sorry to bother you again and I rethought this issue, real work is remove setter injection here, right? https://github.com/spring-projects/spring-boot/blob/e4a0e9d9acf90b2f16656e10211b7e72476acad6/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/diagnostics/FailureAnalyzers.java#L67-L97

Comment From: wilkinsona

Closing in favor of #38322.