gdbarch-components.py: Remove spurious space from "frame_info_ptr " params

If you run gdbarch.py today, you'll get local modifications compared
to what's in the tree, like:

 --- c/gdb/gdbarch-gen.h
 +++ w/gdb/gdbarch-gen.h
 @@ -315,8 +315,8 @@ extern void set_gdbarch_register_type (struct gdbarch *gdbarch, gdbarch_register
     should match the address at which the breakpoint was set in the dummy
     frame. */

 -typedef struct frame_id (gdbarch_dummy_id_ftype) (struct gdbarch *gdbarch, frame_info_ptr this_frame);
 -extern struct frame_id gdbarch_dummy_id (struct gdbarch *gdbarch, frame_info_ptr this_frame);
 +typedef struct frame_id (gdbarch_dummy_id_ftype) (struct gdbarch *gdbarch, frame_info_ptr  this_frame);
 +extern struct frame_id gdbarch_dummy_id (struct gdbarch *gdbarch, frame_info_ptr  this_frame);
  extern void set_gdbarch_dummy_id (struct gdbarch *gdbarch, gdbarch_dummy_id_ftype *dummy_id);

etc.

The extra space comes from the "frame_info_ptr " param that appears in
a number of gdbarch methods in gdbarch-components.py.  With the extra
space removed, running ./gdbarch.py generates the exact code that's in
the tree already.

Change-Id: If7d20b8c6b2fd9ff466142a01bd2611c9ef9f53e