Remove function StringFromInt from StringUtil.cpp/.h. C++11 has std::to_string for this now.

Source/Core/Common/IniFile.h

@@ -56,7 +56,7 @@ public:
 
 		void Set(const char* key, int newValue, int defaultValue);
 		void Set(const char* key, int newValue) {
-			Set(key, StringFromInt(newValue).c_str());
+			Set(key, std::to_string(newValue).c_str());
 		}
 
 		void Set(const char* key, bool newValue, bool defaultValue);

Source/Core/Common/StringUtil.cpp

@@ -185,13 +185,6 @@ bool TryParse(const std::string &str, bool *const output)
 	return true;
 }
 
-std::string StringFromInt(int value)
-{
-	char temp[16];
-	sprintf(temp, "%i", value);
-	return temp;
-}
-
 std::string StringFromBool(bool value)
 {
 	return value ? "True" : "False";

Source/Core/Common/StringUtil.h

@@ -48,7 +48,6 @@ std::string ThousandSeparate(I value, int spaces = 0)
 	return oss.str();
 }
 
-std::string StringFromInt(int value);
 std::string StringFromBool(bool value);
 
 bool TryParse(const std::string &str, bool *output);