easy: remove duplicate wolfSSH init call

It is already done in Curl_ssh_init() where it belongs.

Closes #12168

lib/easy.c

@@ -194,13 +194,6 @@ static CURLcode global_init(long flags, bool memoryfuncs)
   }
 #endif
 
-#ifdef USE_WOLFSSH
-  if(WS_SUCCESS != wolfSSH_Init()) {
-    DEBUGF(fprintf(stderr, "Error: wolfSSH_Init failed\n"));
-    return CURLE_FAILED_INIT;
-  }
-#endif
-
   easy_init_flags = flags;
 
 #ifdef DEBUGBUILD