Remove `Resources` declaration from `ReadiumShared` (#481) #771

Job	Run time
Build	10m 19s
Integration (CocoaPods)	3m 48s
Integration (Local)	4m 30s
Integration (Carthage)	16m 10s
Integration (Swift Package Manager)	5m 27s
Lint	1m 19s
	41m 33s

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