Update Win32 Makefile following GooCanvas removal#394

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homes32 wants to merge 1 commit intocsete:masterfrom

Commits on Feb 26, 2026

Removed GooCanvas dependencies from Win32 makefile following https://github.com/csete/gpredict/commit/2a57f14693e0af49235dc80c905f54a058fabc07
homes32
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