[CALCITE-5034] Remove unused remote S3 build cache #217

Job	Run time
Windows (JDK 17)	2m 53s
Windows (JDK 8)	2m 51s
Linux (JDK 8), oldest Guava, America/New_York Timezone	2m 57s
Linux (JDK 8), latest Guava, America/New_York Timezone	2m 58s
Linux (JDK 17)	2m 57s
Linux (JDK 11), Pacific/Chatham Timezone	2m 58s
Windows (JDK 21)	2m 53s
Error Prone (JDK 11), latest Guava	2m 55s
Linux (JDK 11), Avatica main	5m 26s
CheckerFramework (JDK 11)	2m 56s
CheckerFramework (JDK 11), oldest Guava	2m 56s
Druid Tests	3m 9s
Linux (JDK 21)	2m 56s
Linux (JDK 22)	2m 55s
Linux (JDK 8) Slow Tests	0s
macOS (JDK 21)	2m 58s
	46m 38s

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