refactor: Remove extra Hashable conformance for ParseObject #695

Job	Run time
linux	2m 17s
spm-test	4m 4s
windows	4m 35s
test (platform=iOS\ Simulator,OS=17.5,name=iPhone\ 15\ Pro\ Max, test)	6m 36s
test (platform\=tvOS\ Simulator,OS=17.5,name\=Apple\ TV, test)	5m 26s
test (platform=watchOS\ Simulator,name=Apple\ Watch\ Series\ 9\ \(41mm\), build)	1m 28s
test (platform=macOS, test)	6m 41s
test (platform=visionOS\ Simulator,OS=1.2,name=Apple\ Vision\ Pro, build)	1m 31s
docs	1m 4s
cocoapods	1m 10s
xcode-test-5_7	1m 2s
	35m 54s

Provide feedback