Remove thirdparty source from repository

thirdparty/README.md

@@ -1,17 +1,5 @@
 # Third Party Libraries
 
-## CRC++
-- https://github.com/d-bahr/CRCpp
-- Version 0.2.0.6
-
-## JSON
-- https://github.com/nlohmann/json
-- Version 2.1.1
-
-## libsquish
-- https://sourceforge.net/projects/libsquish/
-- Version 1.15
-
 ## libtomcrypt
 - https://www.libtom.net/LibTomCrypt/
 - Version 1.18.2
@@ -20,18 +8,6 @@
 - https://www.libtom.net/LibTomMath/
 - Version 1.1.0
 
-## minilzo
-- http://www.oberhumer.com/opensource/lzo/
-- Version 2.10
-
-## minizip
-- https://www.zlib.net/
-- Version 1.2.11 (Zlib)
-
-## NVIDIA Texture Tools
-- https://github.com/castano/nvidia-texture-tools
-- Version 2.1.1
-
 ## Salsa20
 - https://cr.yp.to/snuffle.html
 - Based on the reference implementation 20051118