changed region for ec2 integration test

Author: kai-ion

tests/aws-cpp-sdk-ec2-integration-tests/EC2PaginationIntegrationTest.cpp

@@ -32,7 +32,6 @@ class EC2PaginationTest : public Aws::Testing::AwsCppSdkGTestSuite {
 
 TEST_F(EC2PaginationTest, TestPaginationTraits) {
     DescribeSpotPriceHistoryRequest request;
-    request.SetAvailabilityZone("us-east-1a");
     request.AddProductDescriptions("Linux/UNIX (Amazon VPC)");
     request.AddInstanceTypes(InstanceType::t1_micro);
     request.SetStartTime(Aws::Utils::DateTime::Now() - std::chrono::hours(1));