Remove generic issue template (#32)

..now that we have templates specific to bug, documentation, etc.

Signed-off-by: Rushi Agrawal <rushi.agr@gmail.com>

.github/ISSUE_TEMPLATE.md

@@ -1,35 +0,0 @@
-<!--
-
-** Please read the guidelines below. **
-
-1.  GitHub is reserved for bug reports and feature requests. The best place to
-    ask a general question is at the Elastic [forums](https://discuss.elastic.co).
-    GitHub is not the place for general questions.
-
-2.  Please fill out EITHER the feature request block or the bug report block
-    below, and delete the other block.
-
-3.  For issues with API definition please note that the API is [auto
-    generated](https://github.com/elastic/elasticsearch-py/blob/master/CONTRIBUTING.md#api-code-generation)
-    so any problems should be checked and reported against [the Elasticsearch
-    repo](https://github.com/elastic/elasticsearch) instead.
-
-Thank you!
-
--->
-
-<!-- Feature request -->
-
-**Describe the feature**:
-
-<!-- Bug report -->
-
-**Elasticsearch version** (`bin/elasticsearch --version`):
-
-**`elasticsearch-py` version (`elasticsearch.__versionstr__`)**: 
-
-Please make sure the major version matches the Elasticsearch server you are running.
-
-**Description of the problem including expected versus actual behavior**:
-
-**Steps to reproduce**: