fix binaryFun

Old log:#2720
Remove import of half of phobos for 100% cases in phobos.

`sort`, `cmp`, `find`, `startsWith`,  `sum` and other algorithms would be compiled faster.

See also: [Issue 13253 - use more scoped imports in phobos](https://issues.dlang.org/show_bug.cgi?id=13253)
I understand but it pollutes code of the module with pragmas needed primarily by you. In my opinion it is better to keep such changes in forked branch and merge on top of upstream when debugging the module. This is just my personal opinion of course but we had a lot of trouble with debug printfs / pragmas in internal Sociomantic projects exactly because of that :(