removed psa_crypto_init from library as this is supposed to be called by the application

Signed-off-by: Ben Taylor <ben.taylor@linaro.org>
diff --git a/library/ssl_ticket.c b/library/ssl_ticket.c
index c10d36f..7b03919 100644
--- a/library/ssl_ticket.c
+++ b/library/ssl_ticket.c
@@ -75,10 +75,6 @@
      */
     key->lifetime = ctx->ticket_lifetime;
 
-    if ((ret = psa_crypto_init()) != 0) {
-        return ret;
-    }
-
     if ((ret = psa_generate_random(key->name, sizeof(key->name))) != 0) {
         return ret;
     }
@@ -278,10 +274,6 @@
 
     memcpy(key_name, key->name, TICKET_KEY_NAME_BYTES);
 
-    if ((ret = psa_crypto_init()) != 0) {
-        goto cleanup;
-    }
-
     if ((ret = psa_generate_random(iv, TICKET_IV_BYTES)) != 0) {
         goto cleanup;
     }