Revert "tests: Call ssh_init() and ssh_finalize() before we run the tests."

Reason: breaks test_rand, because threading has to be initialized
before ssh_init()

This reverts commit ef1866db76ed10d64bf8cf97111554b2b2eb1278.

tests/torture.c

@@ -1,8 +1,7 @@
-#include <stdio.h>
-#include <libssh/libssh.h>
-
 #include "torture.h"
 
+#include <stdio.h>
+
 static int verbosity = 0;
 
 int torture_libssh_verbosity(void){
@@ -10,16 +9,8 @@ int torture_libssh_verbosity(void){
 }
 
 int main(int argc, char **argv) {
-    int rc;
-
     (void) argc;
     (void) argv;
 
-    ssh_init();
-
-    rc = torture_run_tests();
-
-    ssh_finalize();
-
-    return rc;
+    return torture_run_tests();
 }