Remove questionable section on "unity builds" - this section cites some "build.sh" script with hardcoded paths to raylib, and on top of it it doesn't even describe a unity build

Working-on-GNU-Linux.md

@@ -132,21 +132,6 @@ zypper in raylib-devel
 
 [raysan5]: mailto:ray@raylib.com "Ramon Santamaria - Ray San"
 
-### "Unity build" - the simplest way to build a project.
-
-On linux you can easily build your project without having to mess with make files. It's fast, and easier to reason about. This is called a unity build (no it has nothing to do with the Unity game engine)
-
-Create a build file, and give it executable permissions:
-```
-touch build.sh
-chmod 700 build.sh
-```
-
-Then edit build.sh:
-```
-cc main.c -g -std=c99 -c -I /opt/raylib/src -o main.o
-cc main.o -s -Wall -std=c99 -I/opt/raylib/src -L/opt/raylib/release/libs/linux -lraylib -lGL -lm -lpthread -ldl -lrt -lX11
-```
 
 ### The simplest possible build command
 ```