Cleaned up test program a bit.

src/test_serial.cpp

@@ -5,23 +5,6 @@
 
 Serial *serial;
 
-std::string toHex(std::string input) {
-    std::stringstream ss;
-    for(unsigned int i = 0; i != input.length(); i++) {
-        char temp[4];
-        sprintf(temp, "%.2X", input[i]);
-        ss << " ";
-        if(input[i] == 0x0A)
-            ss << "LF";
-        else if(input[i] == 0x0D)
-            ss << "NL";
-        else
-            ss << input[i];
-        ss << " " << std::hex << temp;
-    }
-    return ss.str();
-};
-
 int main(int argc, char **argv)
 {
     std::string port("/dev/tty.usbserial-A900cfJA");