clean building md

we dont need submodules thx to cmkr

we dont need to specify llvm path if we correctly installed llvm.

docs/BUILDING.md

@@ -1,11 +1,3 @@
-
-**NOTE"": When cloning this repo, don't forget to add **--recursive** flag. 
-So the command should look like this:
-
-```bash
-git clone --recursive https://github.com/NaC-L/Mergen
-```
-
 # Docker
 
 To build Mergen in Docker run the following commands:
@@ -33,9 +25,3 @@ docker run --rm -v %cd%:/data mergen target.exe 0x123456789
 docker run --rm -v $PWD:/data mergen target.exe 0x123456789
 ```
 
-
-## Building with Windows
-If you have built llvm, this command should work.
-```
-cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_COMPILER="clang++" -DCMAKE_C_COMPILER="clang" -G "Ninja" -DLLVM_DIR="<path_to_llvm_dir>\build\lib\cmake\llvm" -DLLVM_INCLUDE_DIRS=<path_to_llvm_include_dirs> -DLLVM_LIBRARY_DIR=<path_to_llvm_library_dir>
-```