CI: remove evm_binding before regenerating it (#201)

this way the diff will pick up redundant files

.github/workflows/sdk.yml

@@ -36,6 +36,7 @@ jobs:
       - name: Run Typechain
         run: |
           cd ci_tests
+          rm -r evm_binding
           npm i -g typechain@8.3.2 @typechain/ethers-v5@11.1.2
           npx typechain@8.3.2 --target ethers-v5 --out-dir evm_binding/ '../evm/out/*/*.json'
         id: generate