arch/x86: Remove more romcc leftovers

The sections .rom.* were for romcc and no longer used.
Some romcc comments were left behind when guards were removed.

Change-Id: I060ad7af2f03c67946f9796e625c072b887280c1
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37955
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

src/lib/program.ld

@@ -13,12 +13,6 @@
 .text . : {
 	_program = .;
 	_text = .;
-	/*
-	 * The .rom.* sections are to acommodate x86 romstage. romcc as well
-	 * as the assembly files put their text and data in these sections.
-	 */
-	*(.rom.text);
-	*(.rom.data);
 	*(.text._start);
 	*(.text.stage_entry);
 #if (ENV_DECOMPRESSOR || ENV_BOOTBLOCK && \