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>

editor.cfg

@@ -1,33 +1,12 @@
 -- Settings stored here are only used in the Editor
 
--- Disable the Missing Asset Resolver by default
-ed_MissingAssetResolver = 0
-e_ShadowsCache=0
-r_MotionBlur=0
-r_HDRVignetting=0
--- For feature-test compatibility
-mn_FatalErrorOnInvalidEntity=0
-
 -- Do not warn on Pak file access issues
 sys_PakWarnOnPakAccessFailures=0
 
--- By default, disable any possible stereo output that might have been enabled via a GEM/other config file so that
--- the editor does not startup in stereo mode (which prevents actually editing the environment)
-r_StereoMode=0
-r_StereoOutput=0
-
 -- When editing terrain in the editor, the highest-detail octree nodes for any edited sector will be rendered until
 -- the level is exported and saved, which can cause an artificial increase in the number of nodes that can get 
 -- queued for visibility checks.  These numbers need to be set high enough to account for those increases.
 
--- The CheckOcclusionQueueSize should be at least (terrain height * terrain width) / (32 * 32) in size.
--- (Each queue entry is 64 bytes of RAM)
-e_CheckOcclusionQueueSize=32768
-
--- The CheckOcclusionOutputQueueSize should be at least double the above queue size for safety.
--- (Each queue entry is 64 bytes of RAM)
-e_CheckOcclusionOutputQueueSize=65536
-
 -- Enable warnings when asset loads take longer than the given millisecond threshold
 cl_assetLoadWarningEnable=true
 cl_assetLoadWarningMsThreshold=100