Remove all dynamic library files generated from compilations of user-defined operators.
Details
When compiling a user-defined operators, a shared object (.so) library
(or dynamic link library, .dll) file is created in RKeOps build
directory (located in the .cache folder in your home). For every
new operators, such a file is created.
Calling clean_rkeops() allows you to empty RKeOps build directory.
You can get_rkeops_build_dir() to get the path to RKeOps
build directory, and you can use ls_rkeops_build_dir() to
list its content.