removed eigen from other github workflows

Author: JMoore5353

.github/workflows/pre-release.yml

@@ -16,7 +16,7 @@ jobs:
     - name: checkout submodules
       run: git submodule update --init --recursive
     - name: install toolchain
-      run: sudo apt -y install gcc-arm-none-eabi libeigen3-dev
+      run: sudo apt -y install gcc-arm-none-eabi
     - name: check toolchain
       run: arm-none-eabi-gcc --version
     - name: build varmint

.github/workflows/release.yml

@@ -16,7 +16,7 @@ jobs:
       - name: checkout submodules
         run: git submodule update --init --recursive
       - name: install toolchain
-        run: sudo apt -y install gcc-arm-none-eabi libeigen3-dev
+        run: sudo apt -y install gcc-arm-none-eabi
       - name: check toolchain
         run: arm-none-eabi-gcc --version
       - name: build varmint