Revert "Temporarily turn on callstack logging"

Bug: 13927881

'twas useful and perhaps should be always enabled (please?)
but not like this, so reverting.

This reverts commit db4488565a.

Change-Id: I9a78c6d6e48342ef6ca1f2f7b5303ca47ccc6086

opengl/libs/EGL/egl.cpp

@@ -222,7 +222,7 @@ static int gl_no_context() {
         }
         char value[PROPERTY_VALUE_MAX];
         property_get("debug.egl.callstack", value, "0");
-        if (true || atoi(value)) {
+        if (atoi(value)) {
             CallStack stack(LOG_TAG);
         }
     }