target-arm: Don't print debug messages for various UNDEF cases

Remove some stray printfs for cases which don't generally happen
(some VFP UNDEF cases, reads and writes to unknown cp14 registers);
we should simply generate an UNDEF when the instruction is executed.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

target-arm/translate.c

diff --git a/target-arm/translate.c b/target-arm/translate.c
index fcb41d1..75c0ad4 100644
--- a/target-arm/translate.c
+++ b/target-arm/translate.c
@@ -3288,12 +3288,10 @@
                         gen_vfp_toul(dp, 32 - rm, 0);
                         break;
                     default: /* undefined */
-                        printf ("rn:%d\n", rn);
                         return 1;
                     }
                     break;
                 default: /* undefined */
-                    printf ("op:%d\n", op);
                     return 1;
                 }
 
@@ -6372,8 +6370,6 @@
             return 0;
         }
     }
-    fprintf(stderr, "Unknown cp14 read op1:%d crn:%d crm:%d op2:%d\n",
-            op1, crn, crm, op2);
     return 1;
 }
 
@@ -6405,8 +6401,6 @@
             return 0;
         }
     }
-    fprintf(stderr, "Unknown cp14 write op1:%d crn:%d crm:%d op2:%d\n",
-            op1, crn, crm, op2);
     return 1;
 }