css: Remove redundant rules for `#users_hover_info` and `#hoverinfo`.
css: Remove redundant rules for `#users_hover_info` and `#hoverinfo`.

The copy of the styling for users_hover_info:

```
-#users_hover_info {
-    left: 25px;
-    top: -40px;
-}
```

Looks less good than the common one with #hoverinfo, so we remove it.

synicalsyntax/zulip,zulip/zulip,punchagan/zulip,rht/zulip,timabbott/zulip,andersk/zulip,kou/zulip,brainwane/zulip,timabbott/zulip,synicalsyntax/zulip,rht/zulip,eeshangarg/zulip,zulip/zulip,kou/zulip,andersk/zulip,timabbott/zulip,andersk/zulip,rht/zulip,brainwane/zulip,synicalsyntax/zulip,punchagan/zulip,andersk/zulip,eeshangarg/zulip,eeshangarg/zulip,kou/zulip,shubhamdhama/zulip,hackerkid/zulip,rht/zulip,punchagan/zulip,shubhamdhama/zulip,zulip/zulip,kou/zulip,hackerkid/zulip,timabbott/zulip,eeshangarg/zulip,shubhamdhama/zulip,zulip/zulip,hackerkid/zulip,shubhamdhama/zulip,brainwane/zulip,showell/zulip,hackerkid/zulip,timabbott/zulip,zulip/zulip,showell/zulip,showell/zulip,kou/zulip,punchagan/zulip,synicalsyntax/zulip,brainwane/zulip,punchagan/zulip,kou/zulip,rht/zulip,brainwane/zulip,synicalsyntax/zulip,showell/zulip,synicalsyntax/zulip,punchagan/zulip,shubhamdhama/zulip,synicalsyntax/zulip,timabbott/zulip,shubhamdhama/zulip,timabbott/zulip,hackerkid/zulip,showell/zulip,andersk/zulip,punchagan/zulip,showell/zulip,zulip/zulip,eeshangarg/zulip,hackerkid/zulip,brainwane/zulip,eeshangarg/zulip,andersk/zulip,kou/zulip,shubhamdhama/zulip,hackerkid/zulip,zulip/zulip,rht/zulip,rht/zulip,brainwane/zulip,showell/zulip,eeshangarg/zulip,andersk/zulip