Revert r362261, "Re-apply r333944 to unbreak ports"

A file update in 2018 broke many ports as it misidentified shared
libraries as PIE binaries.  r333944 reverted part of the change,
restoring ports builds but misidentifying objects in the opposite
direction.

Earlier this month file 5.39 was imported, and then the change
originally from r333944 was recommitted as r362261.  However, the
issue was fixed upstream, so r362261 serves no purpose.

PR:		246960, 247461 [exp-run]
Sponsored by:	The FreeBSD Foundation

contrib/file/magic/Magdir/elf

@@ -50,8 +50,9 @@
 !:mime	application/x-object
 >16	leshort		2		executable,
 !:mime	application/x-executable
->16	leshort		3		shared object,
-!:mime	application/x-sharedlib
+>16	leshort		3		${x?pie executable:shared object},
+
+!:mime	application/x-${x?pie-executable:sharedlib}
 >16	leshort		4		core file,
 !:mime	application/x-coredump
 # OS-specific