[oe] scp-argument-fix.patch is not needed for dropbear 0.50

[Rolf Leggewie]

Khem Raj wrote:
> applied scp-argument-fix.patch to all versions of dropbear. However this
> patch is not needed for dropbear 0.50 e.g. Only 0.49 requires it.

Thanks.  Updated in 3690cf9a949f76acaa2b247794d6ee00339acd46