How to fix warning executable found?

[mrustl]

checking for executable files ... WARNING
Warning:   Found the following executable file:
    inst/extdata/wtaq.2.1.exe
  Source packages should not contain undeclared executable files.
  See section 'Package structure' in the 'Writing R Extensions' manual.

https://github.com/KWB-R/kwb.wtaq/runs/6848369238?check_suite_focus=true#step:9:117