acpigen: Remove acpigen_patch_len

Change-Id: I77276342b3f44c7c845a10682ff1f15599c4c721
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/7365
Tested-by: build bot (Jenkins)
Reviewed-by: Rudolf Marek <r.marek@assembler.cz>
diff --git a/src/arch/x86/boot/acpigen.c b/src/arch/x86/boot/acpigen.c
index 0fb400e..108d6c8 100644
--- a/src/arch/x86/boot/acpigen.c
+++ b/src/arch/x86/boot/acpigen.c
@@ -22,7 +22,7 @@
 
 /*
  * If you need to change this, change acpigen_write_f and
- * acpigen_patch_len
+ * acpigen_pop_len
  */
 
 #define ACPIGEN_MAXLEN 0xfff
@@ -46,17 +46,6 @@
 	return 2;
 }
 
-void acpigen_patch_len(int len)
-{
-	ASSERT(len <= ACPIGEN_MAXLEN)
-	ASSERT(ltop > 0)
-	char *p = len_stack[--ltop];
-	/* generate store length for 0xfff max */
-	p[0] = (0x40 | (len & 0xf));
-	p[1] = (len >> 4 & 0xff);
-
-}
-
 void acpigen_pop_len(void)
 {
 	int len;