updates: remove testnet case

It need not be any different

src/common/updates.cpp

@@ -35,7 +35,7 @@
 
 namespace tools
 {
-  bool check_updates(const std::string &software, const std::string &buildtag, bool testnet, std::string &version, std::string &hash)
+  bool check_updates(const std::string &software, const std::string &buildtag, std::string &version, std::string &hash)
   {
     std::vector<std::string> records;
     bool found = false;
@@ -50,10 +50,7 @@ namespace tools
         "updates.moneropulse.se"
     };
 
-    static const std::vector<std::string> testnet_dns_urls = { "testver.moneropulse.net"
-    };
-
-    if (!tools::dns_utils::load_txt_records_from_dns(records, testnet ? testnet_dns_urls : dns_urls))
+    if (!tools::dns_utils::load_txt_records_from_dns(records, dns_urls))
       return false;
 
     for (const auto& record : records)

src/common/updates.h

@@ -32,6 +32,6 @@
 
 namespace tools
 {
-  bool check_updates(const std::string &software, const std::string &buildtag, bool bestnet, std::string &version, std::string &hash);
+  bool check_updates(const std::string &software, const std::string &buildtag, std::string &version, std::string &hash);
   std::string get_update_url(const std::string &software, const std::string &subdir, const std::string &buildtag, const std::string &version, bool user);
 }

src/cryptonote_core/cryptonote_core.cpp

@@ -1101,7 +1101,7 @@ namespace cryptonote
 
     std::string version, hash;
     MCDEBUG("updates", "Checking for a new " << software << " version for " << buildtag);
-    if (!tools::check_updates(software, buildtag, m_testnet, version, hash))
+    if (!tools::check_updates(software, buildtag, version, hash))
       return false;
 
     if (tools::vercmp(version.c_str(), MONERO_VERSION) <= 0)