Remove flappy test

Author: Crebs

libs/SalesforceSDKCore/SalesforceSDKCoreTests/SFNetworkTests.m

@@ -114,8 +114,8 @@ - (void)testSessionSharing {
     }
 }
 
-
-- (void)testMetricsAction {
+// TODO: Add back after fixing Flappiness
+- (void)_testMetricsAction {
     [self addTeardownBlock:^{
         SFNetwork.metricsCollectedAction = nil;
     }];

libs/SalesforceSDKCore/SalesforceSDKCoreTests/SalesforceRestAPITests.m

@@ -2894,7 +2894,8 @@ - (void)testRestApiGlobalInstance {
     XCTAssertTrue(globalInstance != sharedInstance, @"SFRestAPI globalInstance and sharedInstance must be different");
 }
 
-- (void)testPublicApiCalls {
+// TODO: Add back after fixing Flappiness
+- (void)_testPublicApiCalls {
      XCTestExpectation *getExpectation = [self expectationWithDescription:@"Get"];
     __block NSError *error = nil;
     __block NSDictionary *response = nil;