MFH: r531755 r531762

Remove the -pedantic flag to fix build on GCC-based systems:

cc1: error: unrecognized command line option "-Wpedantic"

Approved by: portmgr (tier-2 blanket)

devel/samurai: Remove new cruft

• USES=compiler:c11 should no longer be necessary after r531755.
• build.ninja patch is pointless since the build does not use it. Besides that while GCC 4.2 does not understand -Wpedantic it should recognize -pedantic fine.

Approved by: ports-secteam blanket