Specify "board_technology" for the OLTs in deployment config file.
Also remove unused yaml deployment configuration files.

Change-Id: I5d033e60483f1e723a352051545925e32735c3f2
diff --git a/deployment-configs/flex-ocp-cord-TT.yaml b/deployment-configs/flex-ocp-cord-TT.yaml
index 40aa307..223fcd8 100644
--- a/deployment-configs/flex-ocp-cord-TT.yaml
+++ b/deployment-configs/flex-ocp-cord-TT.yaml
@@ -52,6 +52,7 @@
     serial: 'EC1838000853'
     oltDebVersion: openolt_asfvolt16-3.4.8-eec0fc9e9a01dc0d35b0b8441e0a22a4c0cc51b4-40G-NNI.deb
     oltDebVersion23: openolt_asfvolt16-3.3.3-1a5d68b50d8bcc5ba6cb1630d3294c30c37cd2f5-40G-NNI.deb
+    board_technology: XGS-PON
 
 onus:
   -