Remove broken tests temporarily (#987)

Summary:

The tests are not actually being run.

After upgrading the Gradle plugin on GitHub, it has become clear that these are running without the AP processing them. When processed, they raise some fairly obvious mistakes:

{P1221730610}

This is removing them for now so we can get the update and new release out.

Done using

```
pastry P1221730610 | rg -F '/src/' | awk '{print $1}' | cut -d ':' -f 1 | uniq | sed -e 's:/Users/realpassy/Projects/java/litho/::' | xargs hg rm -v
```

To restore the rests, let's do it one-by-one by doing `hg revert -r 5ac836c8ff21bb798ce1aba47a47857f93f3d47c^ -- litho-it/path/to/test.java`

Differential Revision: D56517990