string_util: Remove ArrayToString()

An old function from Dolphin. This is also unused, and pretty inflexible
when it comes to printing out different data types (for example, one
might not want to print out an array of u8s but a different type
instead. Given we use fmt, there's no need to keep this implementation
of the function around.

src/common/string_util.cpp

@@ -6,7 +6,6 @@
 #include <cctype>
 #include <codecvt>
 #include <cstdlib>
-#include <iomanip>
 #include <locale>
 #include <sstream>
 #include "common/common_paths.h"
@@ -33,24 +32,6 @@ std::string ToUpper(std::string str) {
     return str;
 }
 
-// For Debugging. Read out an u8 array.
-std::string ArrayToString(const u8* data, std::size_t size, int line_len, bool spaces) {
-    std::ostringstream oss;
-    oss << std::setfill('0') << std::hex;
-
-    for (int line = 0; size; ++data, --size) {
-        oss << std::setw(2) << (int)*data;
-
-        if (line_len == ++line) {
-            oss << '\n';
-            line = 0;
-        } else if (spaces)
-            oss << ' ';
-    }
-
-    return oss.str();
-}
-
 std::string StringFromBuffer(const std::vector<u8>& data) {
     return std::string(data.begin(), std::find(data.begin(), data.end(), '\0'));
 }