Remove dead code for unimplemented USER_PIN command

Signed-off-by: Kent Yoder <key@linux.vnet.ibm.com>

src/e_pkcs11.c

@@ -151,7 +151,6 @@ pid_t mypid = -1;
 
 /* The definitions for control commands specific to this engine */
 #define PKCS11_CMD_SO_PATH		ENGINE_CMD_BASE
-#define PKCS11_CMD_USER_PIN             (ENGINE_CMD_BASE+1)
 static const ENGINE_CMD_DEFN pkcs11_cmd_defns[] =
 {
 	{ PKCS11_CMD_SO_PATH,
@@ -159,11 +158,6 @@ static const ENGINE_CMD_DEFN pkcs11_cmd_defns[] =
 		"Specifies the path to the 'pkcs#11' shared library",
 		ENGINE_CMD_FLAG_STRING
 	},
-	{ PKCS11_CMD_USER_PIN,
-		"USER_PIN",
-		"Provides the user PIN for devices that need one to function",
-		ENGINE_CMD_FLAG_STRING
-	},
 	{0, NULL, NULL, 0}
 };