Remove MPS backend dependencies installation (#11237)

### Summary
All `mps/install_requirements.sh` does is to install ninja — which is
not used to build the MPS backend.

### Test plan
CI

Author: jathu

.ci/scripts/test_ios_ci.sh

@@ -42,10 +42,6 @@ say "Installing CoreML Backend Requirements"
 
 ./backends/apple/coreml/scripts/install_requirements.sh
 
-say "Installing MPS Backend Requirements"
-
-./backends/apple/mps/install_requirements.sh
-
 say "Exporting Models"
 
 python3 -m examples.portable.scripts.export --model_name="$MODEL_NAME" --segment_alignment=0x4000

.github/workflows/apple-perf.yml

@@ -188,11 +188,6 @@ jobs:
             backends/apple/coreml/scripts/install_requirements.sh
         fi
 
-        if [[ ${{ matrix.config }} == *"mps"* ]]; then
-          PYTHON_EXECUTABLE=python ${CONDA_RUN} --no-capture-output \
-            backends/apple/mps/install_requirements.sh
-        fi
-
         # Install requirements for export_llama
         PYTHON_EXECUTABLE=python ${CONDA_RUN} bash examples/models/llama/install_requirements.sh
 
@@ -379,10 +374,6 @@ jobs:
         # Install CoreML Backend Requirements
         PYTHON_EXECUTABLE=python ${CONDA_RUN} --no-capture-output \
           backends/apple/coreml/scripts/install_requirements.sh
-
-        # Install MPS Backend Requirements
-        PYTHON_EXECUTABLE=python ${CONDA_RUN} --no-capture-output \
-          backends/apple/mps/install_requirements.sh
         echo "::endgroup::"
 
         echo "::group::Build ExecuTorch iOS frameworks"

.github/workflows/apple.yml

@@ -168,10 +168,6 @@ jobs:
         PYTHON_EXECUTABLE=python ${CONDA_RUN} --no-capture-output \
         backends/apple/coreml/scripts/install_requirements.sh
 
-        # Install MPS Backend Requirements
-        PYTHON_EXECUTABLE=python ${CONDA_RUN} --no-capture-output \
-        backends/apple/mps/install_requirements.sh
-
         # Build iOS Frameworks
         PYTHON_EXECUTABLE=python ${CONDA_RUN} --no-capture-output scripts/build_apple_frameworks.sh
 
@@ -306,10 +302,6 @@ jobs:
         # Install CoreML Backend Requirements
         PYTHON_EXECUTABLE=python ${CONDA_RUN} --no-capture-output \
           backends/apple/coreml/scripts/install_requirements.sh
-
-        # Install MPS Backend Requirements
-        PYTHON_EXECUTABLE=python ${CONDA_RUN} --no-capture-output \
-          backends/apple/mps/install_requirements.sh
         echo "::endgroup::"
 
         echo "::group::Build ExecuTorch iOS frameworks"

.github/workflows/trunk.yml

@@ -414,11 +414,7 @@ jobs:
         # Setup executorch
         PYTHON_EXECUTABLE=python ${CONDA_RUN} bash .ci/scripts/setup-macos.sh --build-tool cmake
 
-        if [[ "${MODE}" == "mps" ]]; then
-          # Install mps delegate
-          PYTHON_EXECUTABLE=python ${CONDA_RUN} bash backends/apple/mps/install_requirements.sh
-          echo "Finishing installing mps."
-        elif [[ "${MODE}" == "coreml" ]]; then
+        if [[ "${MODE}" == "coreml" ]]; then
           # Install coreml delegate
           PYTHON_EXECUTABLE=python ${CONDA_RUN} bash backends/apple/coreml/scripts/install_requirements.sh
           echo "Finishing installing coreml."
@@ -504,8 +500,6 @@ jobs:
         PYTHON_EXECUTABLE=python ${CONDA_RUN} bash .ci/scripts/setup-macos.sh --build-tool "${BUILD_TOOL}"
         PYTHON_EXECUTABLE=python ${CONDA_RUN} bash backends/apple/coreml/scripts/install_requirements.sh
         echo "Finishing installing coreml."
-        PYTHON_EXECUTABLE=python ${CONDA_RUN} bash backends/apple/mps/install_requirements.sh
-        echo "Finishing installing mps."
 
         # Build and test coreml model
         MODELS=(mv3 ic4 resnet50 edsr mobilebert w2l)

backends/apple/mps/install_requirements.sh

@@ -42,12 +42,6 @@ In order to be able to successfully build and run a model using the MPS backend
 
 ***Step 1.*** Please finish tutorial [Setting up ExecuTorch](https://pytorch.org/executorch/main/getting-started-setup).
 
-***Step 2.*** Install dependencies needed to lower MPS delegate:
-
-  ```bash
-  ./backends/apple/mps/install_requirements.sh
-  ```
-
 ## Build
 
 ### AOT (Ahead-of-time) Components

backends/apple/mps/setup.md

@@ -42,12 +42,6 @@ In order to be able to successfully build and run a model using the MPS backend
 
 ***Step 1.*** Please finish tutorial [Getting Started](getting-started.md).
 
-***Step 2.*** Install dependencies needed to lower MPS delegate:
-
-  ```bash
-  ./backends/apple/mps/install_requirements.sh
-  ```
-
 ## Build
 
 ### AOT (Ahead-of-time) Components

docs/source/backends-mps.md

@@ -112,9 +112,6 @@ python3 -m venv .venv && source .venv/bin/activate && pip install --upgrade pip
 
 # CoreML-only requirements:
 ./backends/apple/coreml/scripts/install_requirements.sh
-
-# MPS-only requirements:
-./backends/apple/mps/install_requirements.sh
 ```
 
 5. Install [CMake](https://cmake.org):

docs/source/using-executorch-ios.md

@@ -36,7 +36,6 @@ Install dependencies
 
 ```
 ./install_executorch.sh
-./backends/apple/mps/install_requirements.sh
 ```
 
 ## Prepare Models

examples/demo-apps/apple_ios/LLaMA/docs/delegates/mps_README.md

@@ -60,10 +60,6 @@ say "Installing CoreML Backend Requirements"
 
 ./backends/apple/coreml/scripts/install_requirements.sh
 
-say "Installing MPS Backend Requirements"
-
-./backends/apple/mps/install_requirements.sh
-
 say "Exporting Models"
 
 python3 -m examples.portable.scripts.export --model_name="$MODEL_NAME"