chore(ci): remove pectra devnet 6 evm feature. (ethereum#1513)

Author: spencer-tb

.github/configs/evm.yaml

@@ -19,8 +19,4 @@ eip7692:
   impl: evmone
   repo: ethereum/evmone
   ref: master
-  targets: ["evmone-t8n", "evmone-eofparse"]
-pectra-devnet-6:
-  impl: eels
-  repo: null
-  ref: null  
+  targets: ["evmone-t8n", "evmone-eofparse"]