Remove unnecessary file that causes linker errors (#5021)

lib/ios/RNNTransitionsOptions.m

@@ -1,18 +0,0 @@
-#import "RNNAnimationsOptions.h"
-
-@implementation RNNAnimationsOptions
-
-- (instancetype)initWithDict:(NSDictionary *)dict {
-	self = [super init];
-	
-	self.push = [[RNNScreenTransition alloc] initWithDict:dict[@"push"]];
-	self.pop = [[RNNScreenTransition alloc] initWithDict:dict[@"pop"]];
-	self.showModal = [[RNNScreenTransition alloc] initWithDict:dict[@"showModal"]];
-	self.dismissModal = [[RNNScreenTransition alloc] initWithDict:dict[@"dismissModal"]];
-	self.setStackRoot = [[RNNScreenTransition alloc] initWithDict:dict[@"setStackRoot"]];
-	self.setRoot = [[RNNScreenTransition alloc] initWithDict:dict[@"setRoot"]];
-
-	return self;
-}
-
-@end