recipes: Remove redaundant devel libs lists

These are added implicitly when you add a library to files_libs

Fixes spurious warnings while building the recipes:

WARNING: No import libraries found for '/libgstvalidate-1.0.a'
WARNING: No import libraries found for '/libgstvalidate-1.0.la'
WARNING: No import libraries found for '/libges-1.0.a'
WARNING: No import libraries found for '/libges-1.0.la'
7 jobs for fix-implib-warnings in 61 minutes and 47 seconds (queued for 1 second)