TST: tweak Hypothesis configuration and idioms
#19831 saw a flaky test, where a slow VM on Travis [went over the default deadline](https://travis-ci.org/pandas-dev/pandas/jobs/448750638#L2895).  This PR therefore configures the per-test-case deadline to a higher value, and disables the global timeout (which is deprecated - we know it's confusing but haven't bumped a major version in years...).

I've also moved a custom strategy from a method on the class to a standalone function, which should avoid some confusion as to where the `draw` argument comes from!
Hello @Zac-HD! Thanks for updating the PR.

 - There are no PEP8 issues in the file [`pandas/conftest.py`](https://github.com/Zac-HD/pandas/blob/bf05e077a427c34a83c3d233e69f0e1c565df937/pandas/conftest.py) !

 - There are no PEP8 issues in the file [`pandas/tests/frame/test_apply.py`](https://github.com/Zac-HD/pandas/blob/bf05e077a427c34a83c3d233e69f0e1c565df937/pandas/tests/frame/test_apply.py) !



##### Comment last updated on November 01, 2018 at 06:20 Hours UTC # [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/23441?src=pr&el=h1) Report
> Merging [#23441](https://codecov.io/gh/pandas-dev/pandas/pull/23441?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/9019582c45d17035098941a666a8b6072c13a357?src=pr&el=desc) will **not change** coverage.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/23441/graphs/tree.svg?width=650&token=eZ4WkYLtcO&height=150&src=pr)](https://codecov.io/gh/pandas-dev/pandas/pull/23441?src=pr&el=tree)

```diff
@@           Coverage Diff           @@
##           master   #23441   +/-   ##
=======================================
  Coverage   92.21%   92.21%           
=======================================
  Files         161      161           
  Lines       51187    51187           
=======================================
  Hits        47202    47202           
  Misses       3985     3985
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `90.64% <ø> (ø)` | :arrow_up: |
| #single | `42.21% <ø> (ø)` | :arrow_up: |


------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/23441?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/23441?src=pr&el=footer). Last update [9019582...bf05e07](https://codecov.io/gh/pandas-dev/pandas/pull/23441?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 CC @TomAugspurger @jreback FYI. Thanks!