Remove ancient PIE patch
    
    Originally added by commit 207484f5d447b8b291e04a7304b16a997e71d10b.
    I think those flags are not neede anymore. Some of those became defaults
    anyway. Others are part of compilation flags used by the system. Nothing
    else should be required. Checking by checksec(8) tool did not reveal any
    differences with or without this patch.