There are a number of maps in game that have this, but do so by not having any phase lanes to the Stars on the map (Ancient Gifts). If you can't reach the star, you have to use normal phase lanes or wormholes.

If you're really determined to remove the research, well it sounds like you made a mistake somewhere. Did you make your own mod with the modified player.entity files? Is the checksum zero? Did you make sure to grab ALL the player.entity files (Rebels and Loyalists)? Are you using any other mods?

You also have to reduce the researchcount in the player entitys by one if you delete the hyperspeedresearch-line.

Also it sounds like your mod is not found, indicated by a zero checksum. Make sure you put your modded files in same foders they are usally in.

For your case it should look simliar to this

C:\Dokuments\My Games\Ironclad Games\Sins of a Solar Empire\Mods\ModName\GameInfo

Place your modded files in the GameInfo folder, if they are just in the ModNames folder the game cant find your files. Make sure the folder is called "GameInfo" cause t is case sensitive.