Revert "build.yml: Try checkout in workflow"

This reverts commit 67d7a53.

Author: DhruvaG2000

.github/workflows/build.yml

@@ -1,4 +1,4 @@
-name: Build Test
+name: Build
 
 on: [push, pull_request]
 
@@ -9,6 +9,11 @@ jobs:
     env:
       CMAKE_PREFIX_PATH: /opt/toolchains
     steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          path: Arduino-Zephyr-API
+
       - name: Initialize
         working-directory: Arduino-Zephyr-API
         run: |
@@ -19,14 +24,6 @@ jobs:
           mv ArduinoCore-API/api/tmpArduinoAPI.h ArduinoCore-API/api/ArduinoAPI.h
           cp -r ArduinoCore-API/api modules/lib/Arduino-Zephyr-API/cores/arduino/.
 
-      - name: Checkout
-        uses: actions/checkout@v3
-        with:
-          ref: ${{ github.event.pull_request.head.sha }}
-          fetch-depth: 0
-          persist-credentials: false
-          path: modules/lib/Arduino-Zephyr-API
-
       - name: Build fade
         working-directory: Arduino-Zephyr-API
         run: |