[Verify CustomOp Construct] Deleted obsolete file, because functionality is now moved to CustomOp class

[StreamingFCLayer_Batch] filled verify function and extended get_nodeattr_types with backend, code_gen_dir and executable_path

[StreamingMaxPool_Batch] filled verify function and extended get_nodeattr_types with backend, code_gen_dir and executable_path

[Pre-commit] formatted files and changed the exception errors in verification to more detailed descriptions of the error