Replace all uses of BOOST_THROW_EXCEPTION with NDN_THROW

Refs: #4834
Change-Id: I6c536cd321fba62d397bf8520f51d2dbba73d908
diff --git a/src/util/cert-helper.cpp b/src/util/cert-helper.cpp
index 164a34f..ae33e00 100644
--- a/src/util/cert-helper.cpp
+++ b/src/util/cert-helper.cpp
@@ -52,7 +52,7 @@
       }
     }
   }
-  BOOST_THROW_EXCEPTION(std::runtime_error(certName.toUri() + " does not exist"));
+  NDN_THROW(std::runtime_error(certName.toUri() + " does not exist"));
 }
 
 Name
@@ -64,7 +64,7 @@
       return certName.getPrefix(i);
     }
   }
-  BOOST_THROW_EXCEPTION(std::runtime_error(certName.toUri() + " is not a legal cert name"));
+  NDN_THROW(std::runtime_error(certName.toUri() + " is not a legal cert name"));
 }
 
 security::Certificate