Remove basic_contract_caller integration test, moved to #1909

Author: ascjones

integration-tests/basic-contract-caller/e2e_tests.rs

@@ -39,6 +39,3 @@ mod basic_contract_caller {
         }
     }
 }
-
-#[cfg(all(test, feature = "e2e-tests"))]
-mod e2e_tests;