15340edce23e63b060c75114d508e1f76757239c introduced a way which allowed bitbake to be found from the PATH variable when directory structures different from poky are used. This just drops a leftover which made the earlier implementation meaningless by reassigning the path relative to oe-core/meta.
I have submitted a new patch. Hopefully the merge gods will smile.
commit 161eaa28ed16f93d57f3d1c4be84f894e99ab72e