refactor: remove templated sample file

• Deleted templated_sample.cpp
 • This file contained an example template usage and is no longer needed.

templated_sample.cpp

@@ -1,31 +0,0 @@
-#include <iostream>
-#include <string>
-
-template <typename T> T add_values(const T &a, const T &b) { return a + b; }
-
-template <typename T> class Box {
-public:
-  explicit Box(const T &value) : value_(value) {}
-  const T &get() const { return value_; }
-  const T *get_2() const { return value_; }
-  void set(const T &v) { value_ = v; }
-  template <typename U> U convert_to() const { return static_cast<U>(value_); }
-
-private:
-  T value_;
-};
-
-int main() {
-  Box<int> ibox(42);
-  std::cout << "Box<int>: " << ibox.get() << "\n";
-
-  Box<double> dbox(3.14);
-  std::cout << "Convert double box to int: " << dbox.convert_to<int>() << "\n";
-
-  std::cout << "add_values<int>(2, 3): " << add_values<int>(2, 3) << "\n";
-
-  std::cout << "add_values<std::string>(\"Hello, \", \"World\"): "
-            << add_values<std::string>("Hello, ", "World") << "\n";
-
-  return 0;
-}