Update repositories.txt

I am purposefully removing libraries that I contributed from this list due to the decision by Arduino to remove attribution on their forum after people die.

Author: delta-G

repositories.txt

@@ -1825,11 +1825,6 @@ https://github.com/dejwk/roo_wifi
 https://github.com/dejwk/roo_windows
 https://github.com/dejwk/roo_windows_onewire
 https://github.com/dejwk/roo_windows_wifi
-https://github.com/delta-G/EventLinkInterrupt
-https://github.com/delta-G/GPT_Stepper
-https://github.com/delta-G/LoveButton
-https://github.com/delta-G/PID_DG
-https://github.com/delta-G/R4_Touch
 https://github.com/deltarobotone/one_system_library
 https://github.com/deneyapkart/deneyap_arduino_examples
 https://github.com/deneyapkart/deneyap-5x7-led-matris-arduino-library