Remove std::exception code from exception.h

* The c++ exception code was unused, now it is just c macro style
  "exceptions"
Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>

src/cc/exception.h

@@ -26,94 +26,6 @@
 
 namespace ebpf {
 
-class Exception : public std::exception {
- public:
-  virtual ~Exception() throw() {}
-};
-
-class StringException : public Exception {
- public:
-  StringException() : errstr_("unknown") {}
-  virtual ~StringException() throw() {}
-  explicit StringException(const std::string& s) : errstr_(s) {}
-  explicit StringException(const char* s) : errstr_(s) {}
-  template <typename... Args>
-  StringException(const char* s, Args... args) {
-    char x[1024];
-    snprintf(x, sizeof(x), s, args...);
-    errstr_.assign(x);
-  }
-  virtual const char* what() const throw() {
-    return errstr_.c_str();
-  }
- protected:
-  std::string errstr_;
-};
-
-class ErrnoException : public StringException {
- public:
-  ErrnoException() : StringException(strerror(errno)) {}
-  explicit ErrnoException(const std::string& s) : StringException(s + ": " + strerror(errno)) {}
-  explicit ErrnoException(const std::string& s, int err) : StringException(s + ": " + strerror(err)) {}
-};
-
-class SystemException : public StringException {
- public:
-  explicit SystemException(int status) {
-    if (status == -1) {
-      errstr_.assign("command not found");
-    } else {
-      errstr_.assign("command exited with ");
-      errstr_ += std::to_string(WEXITSTATUS(status));
-    }
-  }
-  SystemException(int status, const std::string& s) {
-    if (status == -1) {
-      errstr_.assign("command not found");
-    } else {
-      errstr_.assign("command exited with ");
-      errstr_ += std::to_string(WEXITSTATUS(status));
-    }
-    errstr_ += "; " + s + ": " + strerror(errno);
-  }
-};
-
-class CompilerException : public StringException {
- public:
-  explicit CompilerException(const std::string& s) : StringException(s) {}
-  template <typename... Args>
-  CompilerException(const char* s, Args... args) : StringException(s, args...) {}
-};
-
-class WatermarkException : public Exception {
- public:
-  WatermarkException() {}
-  virtual const char* what() const throw() {
-    return "Reached High Watermark";
-  }
-};
-
-class TerminateException : public Exception {
- public:
-  TerminateException() {}
-  virtual const char* what() const throw() {
-    return "Terminated";
-  }
-};
-
-class StatusException : public Exception {
- public:
-  explicit StatusException(int st, const std::string &msg) : st_(st), msg_(msg) {}
-  virtual const char* what() const throw() {
-    return msg_.c_str();
-  }
-  int status() const { return st_; }
-  const std::string & message() { return msg_; }
- protected:
-  int st_;
-  std::string msg_;
-};
-
 template <typename... Args>
 std::tuple<int, std::string> mkstatus(int ret, const char *fmt, Args... args) {
   char buf[1024];
@@ -129,22 +41,6 @@ static inline std::tuple<int, std::string> mkstatus(int ret) {
   return std::make_tuple(ret, std::string());
 }
 
-#define TRYT(CMD) \
-  do { \
-    int __status = (CMD); \
-    if (__status != 0) { \
-      throw StatusException(__status); \
-    } \
-  } while (0)
-
-#define TRY2T(CMD) \
-  do { \
-    std::tuple<int, std::string> __stp = (CMD); \
-    if (std::get<0>(__stp) != 0) { \
-      throw StatusException(std::get<0>(__stp)); \
-    } \
-  } while (0)
-
 #define TRY(CMD) \
   do { \
     int __status = (CMD); \