Remove heavy compatibility includes added in 2019.01.

Should have a strictly positive effect on compile times.

doc/changelog.dox

@@ -93,6 +93,13 @@ See also:
     -   @ref Trade::CameraData constructor not taking an explicit type enum,
         use @ref Trade::CameraData::CameraData(CameraType, Rad, Float, Float, Float, const void*)
         instead
+-   All includes of @ref Corrade/Containers/PointerStl.h and
+    @ref Corrade/Containers/ArrayViewStl.h that were added in 2019.01 for
+    preserving backwards compatibility after the move from @ref std::unique_ptr
+    / @ref std::vector to @ref Corrade::Containers::Pointer /
+    @ref Corrade::Containers::ArrayView are now removed. This should have a
+    significant positive effect on compile times of code using the @ref GL,
+    @ref Audio, @ref Trade and @ref Text librariess
 
 @section changelog-2020-06 2020.06
 

doc/snippets/MagnumMeshTools-gl.cpp

@@ -34,6 +34,10 @@
 #include "Magnum/MeshTools/Interleave.h"
 #include "Magnum/Trade/MeshData.h"
 
+#ifdef MAGNUM_BUILD_DEPRECATED
+#include <vector>
+#endif
+
 using namespace Magnum;
 
 int main() {

src/Magnum/MeshTools/Compile.h

@@ -40,8 +40,6 @@
 #include "Magnum/MeshTools/visibility.h"
 
 #ifdef MAGNUM_BUILD_DEPRECATED
-#include <tuple>
-#include <memory> /* deliberately kept here */
 #include <Corrade/Utility/Macros.h>
 #endif
 

src/Magnum/Text/AbstractFont.h

@@ -38,10 +38,6 @@
 #include "Magnum/Text/Text.h"
 #include "Magnum/Text/visibility.h"
 
-#ifdef MAGNUM_BUILD_DEPRECATED
-#include <Corrade/Containers/PointerStl.h>
-#endif
-
 namespace Magnum { namespace Text {
 
 /**

src/Magnum/Text/AbstractFontConverter.h

@@ -37,10 +37,6 @@
 #include "Magnum/Text/Text.h"
 #include "Magnum/Text/visibility.h"
 
-#ifdef MAGNUM_BUILD_DEPRECATED
-#include <Corrade/Containers/PointerStl.h>
-#endif
-
 #ifdef CORRADE_TARGET_LIBCXX
 #include <string> /* Libc++ doesn't have std::u32string in the fwdecl */
 #else