Revert "display: Store and restore the current eglContext"

This reverts commit 99ff47d39ed58a04890ccf8ba9d86ef2a5621270.
Context restore is not required as HWC2 runs in hal context.

Change-Id: If12e53f684db6440b8232f5a694220e88842445c

1 files changed, 0 insertions, 21 deletions

diff --git a/gpu_tonemapper/glengine.cpp b/gpu_tonemapper/glengine.cpp
index 6cfe15f5..6c94c23a 100644
--- a/gpu_tonemapper/glengine.cpp
+++ b/gpu_tonemapper/glengine.cpp
@@ -47,27 +47,6 @@ void engine_bind(void* context)
 }
 
 //-----------------------------------------------------------------------------
-// store the current context(caller)
-void* engine_backup()
-{
-  EngineContext* callerContext = new EngineContext();
-  // store the previous display/context
-  callerContext->eglDisplay = eglGetCurrentDisplay();
-  callerContext->eglContext = eglGetCurrentContext();
-  callerContext->eglSurface = eglGetCurrentSurface(EGL_DRAW);
-
-  return (void*)callerContext;
-}
-//-----------------------------------------------------------------------------
-// frees the backed up caller context
-void engine_free_backup(void* context)
-{
-  EngineContext* callerContext = (EngineContext*)(context);
-
-  delete callerContext;
-}
-
-//-----------------------------------------------------------------------------
 // initialize GL
 //
 void* engine_initialize(bool isSecure)