Edited Issue: Old variables are still in intellisense even after reanalyzing [1772]

try making

```
var randomVar = "hello random var";
```

then, wait for analysis to happen.

then, type.
```
rand
```
followed by ctrl + space. You should see randomVar in the list.

Now delete the two lines you have added and wait for analysis to happen. Type rand and ctrl+space

Expect:
to not see randomVar in the list

Actual:
randomVar is still in the list and has not been removed