remove annoying env file since git filter with sed does not work on w…

…indows

.gitignore

@@ -1,3 +1,4 @@
+/fw/.settings/language.settings.xml
 *.lck
 \#auto_saved_files\#
 pcb/kicad/pcb_badge/pcb_badge-backups/*.zip

README.md

@@ -1,16 +1,5 @@
 # HITCON PCB Badge
 
-## Project Setup
-
-After cloning the repository, execute the following commands to prevent the environment from being checked by Git.
-
-```shell
-git config --local filter.eclipse_env_hash.clean "sed 's/env-hash=\"[^\"]*\"/env-hash=\"\"/g'"
-git config --local filter.eclipse_env_hash.smudge cat
-```
-
-ref: [Eclipse Community Forums: C / C++ IDE (CDT) » Keeping language.settings.xml under source control?](https://www.eclipse.org/forums/index.php/t/1074031/)
-
 ## Firmware Development
 
 execute `fw/merge.py` to merge STM32CubeIDE generated `main.c` with user code in `main.cc` into `main.cc`.