Internals: removed seemingly unused AutoFitChildAxises.

The clamp was done on BeginChild(). Amend 2545d75c

imgui.cpp

@@ -5445,7 +5445,6 @@ bool ImGui::BeginChildEx(const char* name, ImGuiID id, const ImVec2& size_arg, b
 
     ImGuiWindow* child_window = g.CurrentWindow;
     child_window->ChildId = id;
-    child_window->AutoFitChildAxises = (ImS8)auto_fit_axises;
 
     // Set the cursor to handle case where the user called SetNextWindowPos()+BeginChild() manually.
     // While this is not really documented/defined, it seems that the expected thing to do.
@@ -5488,22 +5487,13 @@ void ImGui::EndChild()
     IM_ASSERT(window->Flags & ImGuiWindowFlags_ChildWindow);   // Mismatched BeginChild()/EndChild() calls
 
     g.WithinEndChild = true;
-    if (window->BeginCount > 1)
-    {
-        End();
-    }
-    else
+    ImVec2 child_size = window->Size;
+    End();
+    if (window->BeginCount == 1)
     {
-        ImVec2 sz = window->Size;
-        if (window->AutoFitChildAxises & (1 << ImGuiAxis_X)) // Arbitrary minimum zero-ish child size of 4.0f causes less trouble than a 0.0f
-            sz.x = ImMax(4.0f, sz.x);
-        if (window->AutoFitChildAxises & (1 << ImGuiAxis_Y))
-            sz.y = ImMax(4.0f, sz.y);
-        End();
-
         ImGuiWindow* parent_window = g.CurrentWindow;
-        ImRect bb(parent_window->DC.CursorPos, parent_window->DC.CursorPos + sz);
-        ItemSize(sz);
+        ImRect bb(parent_window->DC.CursorPos, parent_window->DC.CursorPos + child_size);
+        ItemSize(child_size);
         if ((window->DC.NavLayersActiveMask != 0 || window->DC.NavWindowHasScrollY) && !(window->Flags & ImGuiWindowFlags_NavFlattened))
         {
             ItemAdd(bb, window->ChildId);

imgui_internal.h

@@ -2436,7 +2436,6 @@ struct IMGUI_API ImGuiWindow
     short                   FocusOrder;                         // Order within WindowsFocusOrder[], altered when windows are focused.
     ImGuiID                 PopupId;                            // ID in the popup stack when this window is used as a popup/menu (because we use generic Name/ID for recycling)
     ImS8                    AutoFitFramesX, AutoFitFramesY;
-    ImS8                    AutoFitChildAxises;
     bool                    AutoFitOnlyGrows;
     ImGuiDir                AutoPosLastDirection;
     ImS8                    HiddenFramesCanSkipItems;           // Hide the window for N frames