Remove certs module from mbedtls.

Certs will be used only by tests and programs.

Signed-off-by: Mateusz Starzyk <mateusz.starzyk@mobica.com>
diff --git a/ChangeLog.d/remove_certs.txt b/ChangeLog.d/remove_certs.txt
new file mode 100644
index 0000000..94772e6
--- /dev/null
+++ b/ChangeLog.d/remove_certs.txt
@@ -0,0 +1,5 @@
+API changes
+   * Remove certs module from the API.
+     Transfer keys and certificates embedded in the library to the test component.
+     This contributes to minimizing library API and discourages users
+     from using unsafe keys in production.