Create branch for version without custom homing support

[zarfld]

Related to #19

Create a new branch 'no-custom-homing' and remove custom homing logic.

• Remove custom homing logic from pokeys_homecomp.comp and pokeys_rt/pokeys_rt.comp.
• Delete DM542_XXYZ_mill/pokeys_homing.hal.
• Modify DM542_XXYZ_mill/Pokeys57CNC_DM542_XXYZ_mill.hal to remove custom homing logic and adjust HAL pin definitions for standard LinuxCNC homing.
• Update compile.sh to exclude compilation of pokeys_homecomp.comp.
• Update DM542_XXYZ_mill/Pokeys57CNC_DM542_XXYZ_mill.ini to remove references to pokeys_homecomp in the HOMEMOD parameter.

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For more details, open the Copilot Workspace session.