Merge #2855: Delete redundant util/fetch-params.sh

2c73d25 Delete fetch-params.sh (Liquid)

Pull request description:

  We previously discussed fixing the `fetch-params.sh` script, but after discussion its not actually used and is redundant.
  This script is broken and `install-params.sh` works fine, so lets just remove it.

ACKs for top commit:
  Fuzzbawls:
    ACK 2c73d25
  panleone:
    utACK 2c73d25

Tree-SHA512: 2dee1dadba54b069471f40be6e3eb52242c4ec15d2a6a49e20ac2633cd98b707a594b0c53b406d7b64710c0d6fe6bbd6cd425e706ad0f6dcdd469609f80f9aae

src/init.cpp

@@ -741,12 +741,16 @@ static void LoadSaplingParams()
     try {
         initZKSNARKS();
     } catch (std::runtime_error &e) {
-        uiInterface.ThreadSafeMessageBox(strprintf(
-                _("Cannot find the Sapling parameters in the following directory:\n"
-                  "%s\n"
-                  "Please run 'sapling-fetch-params' or './util/fetch-params.sh' and then restart."),
-                ZC_GetParamsDir()),
-                                         "", CClientUIInterface::MSG_ERROR);
+        std::string strError = strprintf(_("Cannot find the Sapling parameters in the following directory:\n%s"), ZC_GetParamsDir());
+        std::string strErrorPosix = strprintf(_("Please run the included %s script and then restart."), "install-params.sh");
+        std::string strErrorWin = strprintf(_("Please copy the included params files to the %s directory."), ZC_GetParamsDir());
+        uiInterface.ThreadSafeMessageBox(strError + "\n"
+#ifndef WIN32
+                      + strErrorPosix,
+#else
+                      + strErrorWin,
+#endif
+                                            "", CClientUIInterface::MSG_ERROR);
         StartShutdown();
         return;
     }