ShellPkg Http.c: Remove extra \n when using -m param

There is already `PRINT_HII (STRING_TOKEN (STR_GEN_CRLF), NULL);`
after `DownloadFile()`, remove this extra `\n` to avoid
printing extra blank lines.

Signed-off-by: Yang Gang <yanggang@byosoft.com.cn>

ShellPkg/DynamicCommand/HttpDynamicCommand/Http.c

@@ -1690,7 +1690,7 @@ GetResponse (
     if (!EFI_ERROR (gRT->GetTime (&EndTime, NULL))) {
       ElapsedSeconds = EfiTimeToEpoch (&EndTime) - EfiTimeToEpoch (&StartTime);
       Print (
-        L",%a%Lus\n",
+        L",%a%Lus",
         ElapsedSeconds ? " " : " < ",
         ElapsedSeconds > 1 ? (UINT64)ElapsedSeconds : 1
         );