FullBright UB is a widely used pack that removes all shadows.
Press Win + R , type %appdata%\.minecraft , and hit Enter. Step 3: Find the options.txt file and open it with Notepad. Fullbright 1.17
If you plan on submitting runs to official leaderboards, be aware that many categories forbid setting your gamma higher than 5.0. Minecraft FullBright with NO MODS Tutorial FullBright UB is a widely used pack that removes all shadows