Yocto : How to remove warning from the bb file ?

Yocto : How to remove warning from the bb file?

in item.bb (in file)
add command

1.
ex) Warning : dev-deps 
INSANE_SKIP_${PN} += "dev-deps"

2.
ex) Warning : arch
INSANE_SKIP_${PN} += "arch"

3. 
ex) Warning : arch, libdir
INSANE_SKIP_${PN} += "arch"
INSANE_SKIP_${PN} += "libdir"
INSANE_SKIP_${PN}-dbg += "libdir"

#yocto #bitbake #bb #warning #INSANE_SKIP