Remove many unused variables and unused setting files (#4607)

* Remove many unused variables and unused setting files

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* Remove a few more dead config vars

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

* fix android test_ConfigureSettings_DefaultValues_SetsValues

Signed-off-by: nemerle <96597+nemerle@users.noreply.github.com>

system_linux_pc.cfg

@@ -10,8 +10,6 @@ sys_PakLogInvalidFileAccess = 0
 -- Remote console inclusion list
 log_RemoteConsoleAllowedAddresses=127.0.0.1
 
-gm_disconnectDetection = 1
-
 -- Localization Settings
 sys_localization_format=0
 
@@ -20,27 +18,7 @@ r_width = 1280
 r_height = 720
 r_fullscreen = 0
 
-r_ShadersAsyncCompiling = 3
-r_ShadersAsyncActivation = 3
-r_ShadersAsyncMaxThreads = 16
-r_ShadersRemoteCompiler = 1
 r_ShadersAllowCompilation = 1
 
--- Use the Asset Processor to route requests to compile shaders. This enables the Asset Processor
--- to forward the request to the real shader compiler server. Your device is no
--- longer required to be on the same network as the shader compiler server, as long as the device can contact the Asset Processor:
-r_AssetProcessorShaderCompiler=0
-
--- If you run your device locally on the same computer as the shader compiler server, you can use 127.0.0.1.
--- To connect to a shader compiler server that runs on another computer, change localhost to the IP address of that computer (61453 is the default port):
---r_ShaderCompilerServer=127.0.0.1
---r_ShaderCompilerPort = 61453
-
--- Spec level: 0 = auto, 1 = low, 2 = medium, 3 = high, 4 = very high. Autodetection not yet implemented for this platform.
-r_GraphicsQuality = 1
-
--- Texture streaming not supported on opengl
-r_TexturesStreaming=0
-
 -- Display FPS
 r_displayInfo = 3