Revert "multiline comment by adam(gts@volconst.com)"

This reverts commit 783576d150.

example_tree.tft

@@ -1,9 +1,6 @@
 # This is a comment
 # The dating in this tree is according to the Byzantine calendar but relative to Christ's birth
 
-/* This is a multiline
-   comment with a * and a / in it */
-
 Adam
 b: -5509.9.06        # Birthday in format yyyy.mm.dd
 

src/parser.cpp

@@ -567,30 +567,6 @@ namespace /* internal */
 				--it;
 				break;
 			/* case '0' ... '9': */
-			case '/':
-				if(it+1<end)
-				{
-					if(it[1]=='/')
-					{
-						if(token_begin < it)
-							tokens.emplace_back(token_begin, it);
-						while(++it < end && *it != '\n'); /* skip comment */
-						token_begin = it;
-						--it;
-					}
-					else if(it[1]=='*')
-					{
-						if(token_begin < it)
-							tokens.emplace_back(token_begin, it);
-						while(++it < end)
-							if(*it=='*' && it+1<end && it[1]=='/')
-								break;
-						it+=2;
-						token_begin = it;
-						--it;
-					}
-				}
-				break;
 
 			default: break;
 			}