glcpp: Remove spurious newline generated by #version handling.

This was causing line numbering to be off by one.  The newline comes
from the NEWLINE token at the end of the line; there's no need to
insert one.

src/glsl/glcpp/glcpp-parse.y

@@ -309,7 +309,7 @@ control_line:
 			talloc_free (macro);
 		}
 		add_builtin_define (parser, "__VERSION__", $2);
-		glcpp_printf(parser->output, "#version %" PRIiMAX "\n", $2);
+		glcpp_printf(parser->output, "#version %" PRIiMAX, $2);
 	}
 |	HASH NEWLINE
 ;