Remove obsolete github issues templates. (#798)

diff --git a/.github/ISSUE_TEMPLATE/1-FAILING_CONNECTION.md b/.github/ISSUE_TEMPLATE/1-FAILING_CONNECTION.md
deleted file mode 100644
index 5ca1fe6..0000000
--- a/.github/ISSUE_TEMPLATE/1-FAILING_CONNECTION.md
+++ /dev/null
@@ -1,35 +0,0 @@
----
-name: `package:http` - An HTTP request fails when made through this client.
-about: You are attempting to make a GET or POST and getting an unexpected
-  exception or status code.
-
----
-
-**********************************************************
-**This is not the repository you want to file issues in!**
-**********************************************************
-
-Note that a failing HTTP connection is almost certainly not caused by a bug in
-package:http.
-
-This package is a wrapper around the HttpClient from dart:io and HttpRequest
-from dart:html. Before filing a bug here verify that the issue is not surfaced
-when using those interfaces directly.
-
-https://api.dart.dev/stable/dart-io/HttpClient-class.html
-https://api.dart.dev/stable/dart-html/HttpRequest-class.html
-
-# Common problems:
-
-- A security policy prevents the connection.
-- Running in an emulator that does not have outside internet access.
-- Using Android and not requesting internet access in the manifest.
-  https://github.com/flutter/flutter/issues/29688
-
-
-None of these problems are influenced by the code in this repo.
-
-# Diagnosing:
-
-- Attempt the request outside of Dart, for instance in a browser or with `curl`.
-- Attempt the request with the dart:io or dart:html equivalent code paths.
diff --git a/.github/ISSUE_TEMPLATE/2-BUG_REPORT.md b/.github/ISSUE_TEMPLATE/2-BUG_REPORT.md
deleted file mode 100644
index e57ca0c..0000000
--- a/.github/ISSUE_TEMPLATE/2-BUG_REPORT.md
+++ /dev/null
@@ -1,17 +0,0 @@
----
-name: `package:http` - I found a bug.
-about: You found that something which is expected to work, doesn't. The same
-  capability works when using `dart:io` or `dart:html` directly.
-
----
-
-<!--
-  Please describe the bug and how to reproduce it.
-
-  Note that if the bug can also be reproduced when going through the interfaces
-  provided by `dart:html or `dart:io` directly the bug should be filed against
-  the Dart SDK: https://github.com/dart-lang/sdk/issues
-
-  A failure to make an http request is more often a problem with the environment
-  than with the client.
--->
diff --git a/.github/ISSUE_TEMPLATE/3-FEATURE_REQUEST.md b/.github/ISSUE_TEMPLATE/3-FEATURE_REQUEST.md
deleted file mode 100644
index 733bcd9..0000000
--- a/.github/ISSUE_TEMPLATE/3-FEATURE_REQUEST.md
+++ /dev/null
@@ -1,18 +0,0 @@
----
-name: `package:http` - I'd like a new feature.
-about: You are using `package:http` and would like a new feature to make it
-  easier to make http requests.
-
----
-
-<!--
-  Please describe the feature you'd like to see us implement along with a use
-  case.
-
-
-  Note that this package is designed to be cross-platform and we will only be
-  able to add features which can be supported with _both_ `dart:io` and
-  `dart:html`. If you're looking for a feature which is already supported by the
-  `dart:io` HttpClient constructor you can construct one manually and pass it
-  to the IOClient constructor directly.
--->
diff --git a/.github/ISSUE_TEMPLATE/4-CUPERTINO_HTTP_BUG_REPORT.md b/.github/ISSUE_TEMPLATE/4-CUPERTINO_HTTP_BUG_REPORT.md
deleted file mode 100644
index 2686bc6..0000000
--- a/.github/ISSUE_TEMPLATE/4-CUPERTINO_HTTP_BUG_REPORT.md
+++ /dev/null
@@ -1,12 +0,0 @@
----
-name: `package:cupertino_http` - I found a bug.
-about: You found that something which is expected to work, doesn't.
-
----
-
-<!--
-  Please describe the bug and how to reproduce it.
-
-  A failure to make an http request is more often a problem with the environment
-  than with the client.
--->
diff --git a/.github/ISSUE_TEMPLATE/5-CUPERTINO_HTTP_REQUEST.md b/.github/ISSUE_TEMPLATE/5-CUPERTINO_HTTP_REQUEST.md
deleted file mode 100644
index fa12724..0000000
--- a/.github/ISSUE_TEMPLATE/5-CUPERTINO_HTTP_REQUEST.md
+++ /dev/null
@@ -1,11 +0,0 @@
----
-name: `package:cupertino_http` - I'd like a new feature.
-about: You are using `package:cupertino_http` and would like a new feature to
-  make it easier to make http requests.
-
----
-
-<!--
-  Please describe the feature you'd like to see us implement along with a use
-  case.
--->