jenkins: kill oneplus3t nightlies and switch to unified tree

Change-Id: I735e6b64ab4106479932e463bef51551f139ce2e

Author: SaatvikShukla

aicp-nightly-targets

@@ -43,6 +43,5 @@
 135 aicp_ferrari-userdebug n7.1 faizauthar@gmail.com
 139 aicp_kiwi-userdebug n7.1 gopinaidu.annam@gmail.com, kaankulahli@gmail.com
 141 aicp_gemini-userdebug n7.1 whyorean@gmail.com
-142 aicp_oneplus3t-userdebug n7.1 saatvik.blacksheep@gmail.com
 143 aicp_A6020-userdebug n7.1 prateekchaubey123@gmail.com
-145 aicp_Z00ED-userdebug n7.1 winglow45@gmail.com, kaankulahli@gmail.com
+145 aicp_Z00ED-userdebug n7.1 winglow45@gmail.com, kaankulahli@gmail.com