bricks/debug: Drop build.

This is no longer used, so let's further streamline maintenance.

.github/workflows/build.yml

@@ -174,28 +174,6 @@ jobs:
         flag-name: virtualhub
         parallel: true
 
-  debug:
-    name: debug firmware
-    needs: [mpy_cross]
-    runs-on: ubuntu-22.04
-    steps:
-    - name: Install cross-compiler
-      run: sudo apt-get update && sudo apt-get install --yes gcc-arm-none-eabi
-    - name: Checkout repo
-      uses: actions/checkout@v4
-      with:
-        submodules: true
-        fetch-depth: 0
-    - name: Download mpy-cross
-      uses: actions/download-artifact@v4
-      with:
-        name: mpy-cross
-        path: micropython/mpy-cross/build
-    - name: Fix file permission
-      run: chmod +x micropython/mpy-cross/build/mpy-cross
-    - name: Build
-      run: make $MAKEOPTS -C bricks/debug build/firmware.dfu
-
   pbio:
     name: pbio tests
     runs-on: ubuntu-22.04

Makefile

@@ -28,9 +28,9 @@ doc:
 clean-doc:
 	@$(MAKE) -C lib/pbio/doc clean
 
-all: movehub cityhub technichub primehub essentialhub virtualhub nxt debug ev3 doc
+all: movehub cityhub technichub primehub essentialhub virtualhub nxt ev3 doc
 
-clean-all: clean-movehub clean-cityhub clean-technichub clean-primehub clean-essentialhub clean-virtualhub clean-nxt clean-debug clean-ev3 clean-doc
+clean-all: clean-movehub clean-cityhub clean-technichub clean-primehub clean-essentialhub clean-virtualhub clean-nxt clean-ev3 clean-doc
 
 ev3: mpy-cross
 	@$(MAKE) -C bricks/ev3
@@ -81,12 +81,6 @@ clean-virtualhub: clean-mpy-cross
 	@$(MAKE) -C bricks/virtualhub clean CROSS_COMPILE=
 	@$(MAKE) -C bricks/virtualhub clean DEBUG=1
 
-debug: mpy-cross
-	@$(MAKE) -C bricks/debug build/firmware.dfu
-
-clean-debug: clean-mpy-cross
-	@$(MAKE) -C bricks/debug clean
-
 mpy-cross:
 	@$(MAKE) -C micropython/mpy-cross CROSS_COMPILE=$(HOST_CROSS_COMPILE)