Update LICENSE files for cpp-httplib

Drop mongoose and add cpp-httplib instead.

Refs: #7140
Signed-off-by: Ralph Sennhauser <ralph.sennhauser@gmail.com>

LICENSE.md

@@ -81,9 +81,6 @@ please inform Wildfire Games at webmaster at wildfiregames dot com.
 - source/third_party/mikktspace/
   - zlib
 
-- source/third_party/mongoose/
-  - MIT - see license_mit.txt
-
 - source/third_party/tinygettext/
   - zlib
 

libraries/LICENSE.txt

@@ -16,6 +16,9 @@ get-windows-libs.bat downloads a checkout of headers and precompiled
   macos-patches
     see license of applicable library
 
+  source/cpp-httplib
+  	MIT
+
   source/cxxtest-4.4
     LGPL v3 - see COPYING
 
@@ -26,7 +29,7 @@ get-windows-libs.bat downloads a checkout of headers and precompiled
     MIT - see src/NVIDIA_Texture_Tools_LICENSE.txt
 
   source/glad
-    Apache-2.0 / (WTFPL OR CC0-1.0) 
+    Apache-2.0 / (WTFPL OR CC0-1.0)
 
   source/spidermonkey
     MPL / GPL / LGPL