string_util: Remove TryParse()

This is an unused hold-over from Dolphin that was primarily used to
parse values out of the .ini files. Given we already have libraries that
do this for us, we don't need to keep this around.

src/common/string_util.cpp

@@ -4,11 +4,11 @@
 
 #include <algorithm>
 #include <cctype>
-#include <cerrno>
 #include <codecvt>
-#include <cstdio>
 #include <cstdlib>
-#include <cstring>
+#include <iomanip>
+#include <locale>
+#include <sstream>
 #include "common/common_paths.h"
 #include "common/logging/log.h"
 #include "common/string_util.h"
@@ -75,40 +75,6 @@ std::string StripQuotes(const std::string& s) {
         return s;
 }
 
-bool TryParse(const std::string& str, u32* const output) {
-    char* endptr = nullptr;
-
-    // Reset errno to a value other than ERANGE
-    errno = 0;
-
-    unsigned long value = strtoul(str.c_str(), &endptr, 0);
-
-    if (!endptr || *endptr)
-        return false;
-
-    if (errno == ERANGE)
-        return false;
-
-#if ULONG_MAX > UINT_MAX
-    if (value >= 0x100000000ull && value <= 0xFFFFFFFF00000000ull)
-        return false;
-#endif
-
-    *output = static_cast<u32>(value);
-    return true;
-}
-
-bool TryParse(const std::string& str, bool* const output) {
-    if ("1" == str || "true" == ToLower(str))
-        *output = true;
-    else if ("0" == str || "false" == ToLower(str))
-        *output = false;
-    else
-        return false;
-
-    return true;
-}
-
 std::string StringFromBool(bool value) {
     return value ? "True" : "False";
 }

src/common/string_util.h

@@ -5,8 +5,6 @@
 #pragma once
 
 #include <cstddef>
-#include <iomanip>
-#include <sstream>
 #include <string>
 #include <vector>
 #include "common/common_types.h"
@@ -28,21 +26,6 @@ std::string StripQuotes(const std::string& s);
 
 std::string StringFromBool(bool value);
 
-bool TryParse(const std::string& str, bool* output);
-bool TryParse(const std::string& str, u32* output);
-
-template <typename N>
-static bool TryParse(const std::string& str, N* const output) {
-    std::istringstream iss(str);
-
-    N tmp = 0;
-    if (iss >> tmp) {
-        *output = tmp;
-        return true;
-    } else
-        return false;
-}
-
 std::string TabsToSpaces(int tab_size, std::string in);
 
 void SplitString(const std::string& str, char delim, std::vector<std::string>& output);