[build] Gradle Cleanup #294

Job	Run time
Gradle Build	4m 15s
Build Examples	2m 53s
PhotonClient Build	38s
Build Offline Docs	45s
Photonlib - Build Docker - Athena	6m 0s
Photonlib - Build Host - Win64	7m 6s
Photonlib - Build Docker - Raspbian	6m 33s
Photonlib - Build Host - macOS	5m 48s
Photonlib - Build Docker - Aarch64	6m 47s
Photonlib - Build Host - Linux	4m 30s
Build fat JAR - Win64	2m 28s
Build fat JAR - macOS	3m 30s
Build fat JAR - Linux	2m 10s
Build fat JAR - macOSArm	2m 9s
Build fat JAR - LinuxArm32	1m 44s
Build fat JAR - LinuxArm64	1m 28s
Build image - ${{ matrix.image_url }}	0s
release	0s
	58m 44s

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