Update terminal_impl.cpp

Remove stupid warnings

Author: flagarde

cpp-terminal/private/terminal_impl.cpp

@@ -15,7 +15,10 @@
 
 #if defined(_WIN32)
   #include <io.h>
+  #pragma warning( push )
+  #pragma warning( disable : 4101)
   #include <windows.h>
+  #pragma warning( pop ) 
   #if !defined(ENABLE_VIRTUAL_TERMINAL_PROCESSING)
     #define ENABLE_VIRTUAL_TERMINAL_PROCESSING 0x0004
   #endif