Remove unused .coveragerc file

The coverage command is not used in this repository.

Change-Id: I69d555b46cd075360d17bf26694e92c5f68c0908
Signed-off-by: Takashi Kajinami <kajinamit@oss.nttdata.com>
diff --git a/.coveragerc b/.coveragerc
deleted file mode 100644
index 1c272e1..0000000
--- a/.coveragerc
+++ /dev/null
@@ -1,6 +0,0 @@
-[run]
-branch = True
-source = telemetry_tempest_plugin
-
-[report]
-ignore_errors = True