[GHA] Temporarily remove iGPU from required (openvinotoolkit#35389)

504 errors are still reproducing during apt update

Author: akladiev

.github/workflows/ubuntu_22.yml

@@ -648,7 +648,7 @@ jobs:
   Overall_Status:
     name: ci/gha_overall_status
     needs: [Smart_CI, Build, Debian_Packages, Samples, Conformance, CXX_Unit_Tests, Python_Unit_Tests, TensorFlow_Layer_Tests, Pytorch_Layer_Tests,
-            CPU_Functional_Tests, TensorFlow_Models_Tests_Precommit, PyTorch_Models_Tests, JAX_Models_Tests_Precommit, NVIDIA_Plugin, Openvino_tokenizers, iGPU,
+            CPU_Functional_Tests, TensorFlow_Models_Tests_Precommit, PyTorch_Models_Tests, JAX_Models_Tests_Precommit, NVIDIA_Plugin, Openvino_tokenizers,
             Keras3_OpenVINO_Backend]
     if: ${{ always() }}
     runs-on: ubuntu-latest