qemu: remove check for 'qemu' binary

The 'qemu' binary used to provide the i386 emulator until it was renamed
to qemu-system-i386 in QEMU 1.0. Since we don't support such old
versions we don't need to check for 'qemu' when probing capabilities.
Reviewed-by: NErik Skultety <eskultet@redhat.com>
Signed-off-by: NDaniel P. Berrangé <berrange@redhat.com>

src/qemu/qemu_capabilities.c

@@ -744,12 +744,6 @@ virQEMUCapsFindBinaryForArch(virArch hostarch,
             goto out;
     }
 
-    /* Third attempt, i686 only: try 'qemu' */
-    if (guestarch == VIR_ARCH_I686) {
-        if ((ret = virQEMUCapsFindBinary("%s", "qemu")) != NULL)
-            goto out;
-    }
-
  out:
     return ret;
 }