Remove redundant emscripten builds

Author: mcbarton

.github/workflows/main.yml

@@ -200,17 +200,9 @@ jobs:
             os: ubuntu-24.04
             emsdk_ver: "3.1.45"
             micromamba_shell_init: bash
-          - name: ubu24-arm
-            os: ubuntu-24.04-arm
-            emsdk_ver: "3.1.45"
-            micromamba_shell_init: bash
           - name: ubu22
             os: ubuntu-22.04
             emsdk_ver: "3.1.45"
-          - name: ubu22-arm
-            os: ubuntu-22.04-arm
-            emsdk_ver: "3.1.45"
-            micromamba_shell_init: bash
           - name: osx13-x86
             os: macos-13
             emsdk_ver: "3.1.45"