Revert "feat: add default config path"

This reverts commit 6021ec89f5.

src/main.cpp

@@ -57,7 +57,7 @@ std::pair<int, int> mapKeyEventToRowColumn(int keyEventNumber, const std::unorde
 
 std::string getConfigPathFromCliArguments(int argc, char *argv[])
 {
-    std::string configPath = "";
+    std::string configPath = "config.yaml";
     int opt;
     while ((opt = getopt(argc, argv, "c:")) != -1)
     {
@@ -67,12 +67,16 @@ std::string getConfigPathFromCliArguments(int argc, char *argv[])
             configPath = optarg;
             break;
         default:
-            std::cout << "No config path provided. Using default config path: $HOME/.config/UsbMakroBoard.yaml\n";
-            configPath = "$HOME/.config/UsbMakroBoard.yaml";
+            std::cerr << "Usage: " << argv[0] << " [-c config_file_path]\n";
+            exit(EXIT_FAILURE);
         }
     }
+    return configPath;
+}
 
-    return configPath;
+YAML::Node loadConfig(const std::string &configPath)
+{
+    return YAML::LoadFile(configPath);
 }
 
 int openDevice(const std::string &devicePath)