testsuite/i386: Cleanup target selectors in i386 target directory.

testsuite/i386: Cleanup target selectors in i386 target directory.

gcc/testsuite/ChangeLog:

2023-02-15  Uroš Bizjak  <ubizjak@gmail.com>

	* g++.target/i386/empty-class2.C (dg-additional-options): Remove.
	* gcc.target/i386/avx512fp16-reduce-op-2.c: Ditto.
	* gcc.target/i386/pr99464.c: Ditto.
	* gcc.target/i386/pr103541.c (dg-do): Compile for !ia32 target.
	* gcc.target/i386/pr108774.c (dg-do): Compile for lp64 target.
	* gcc.target/i386/pr85593.c (dg-do): Run for *-*-linux* target.
	* gcc.target/i386/pr98063.c: Ditto.
	* gcc.target/i386/pr90007.c (dg-do): Remove target selector.
	* gcc.target/i386/pr92841-2.c (dg-do): Remove unneeded curly braces.
	* gcc.target/i386/pr95464.c: Ditto.
	* gcc.target/i386/pr99530-1.c (dg-do): Compile for *-*-linux* target.
	* gcc.target/i386/pr99530-2.c: Ditto.
	* gcc.target/i386/pr99530-3.c: Ditto.
	* gcc.target/i386/pr99530-4.c: Ditto.
	* gcc.target/i386/pr99530-5.c: Ditto.
	* gcc.target/i386/pr99530-6.c: Ditto.
	* gcc.target/i386/pr99531.c (dg-do): Compile for !ia32 target.