cbfstool: Remove more unused functions from common.c

A lot of the early functions have been re-implemented in a context-
centric mode, rather than relying on global variables. Removing these
has the nice side-effect of allowing us to remove more global
variables.

Change-Id: Iee716ef38729705432dd10d12758c886d38701a8
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/5104
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

util/cbfstool/cbfs.h

@@ -119,7 +119,6 @@ struct cbfs_payload {
  */
 #define CBFS_COMPONENT_NULL 0xFFFFFFFF
 
-int cbfs_file_header(unsigned long physaddr);
 #define CBFS_NAME(_c) (((char *) (_c)) + sizeof(struct cbfs_file))
 #define CBFS_SUBHEADER(_p) ( (void *) ((((uint8_t *) (_p)) + ntohl((_p)->offset))) )
 /* cbfs_image.c */
@@ -127,12 +126,6 @@ uint32_t get_cbfs_entry_type(const char *name, uint32_t default_value);
 const char *get_cbfs_entry_type_name(uint32_t type);
 uint32_t get_cbfs_compression(const char *name, uint32_t unknown);
 
-/* common.c */
-int find_master_header(void *romarea, size_t size);
-void recalculate_rom_geometry(void *romarea);
-struct cbfs_file *cbfs_create_empty_file(uint32_t physaddr, uint32_t size);
-const char *strfiletype(uint32_t number);
-
 /* elfheaders.c */
 int
 elf_headers(const struct buffer *pinput,