opengl: Another places where it is too eager to check for errors.

Change-Id: Ib6ca3d653f3fd1155bce418226146934e765928d

vcl/opengl/gdiimpl.cxx

@@ -1505,8 +1505,6 @@ void OpenGLSalGraphicsImpl::endPaint()
         maContext.makeCurrent();
         glFlush();
     }
-
-    CHECK_GL_ERROR();
 }
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

vcl/opengl/texture.cxx

@@ -92,8 +92,6 @@ ImplOpenGLTexture::~ImplOpenGLTexture()
     SAL_INFO( "vcl.opengl", "~OpenGLTexture " << mnTexture );
     if( mnTexture != 0 )
         glDeleteTextures( 1, &mnTexture );
-
-    CHECK_GL_ERROR();
 }
 
 OpenGLTexture::OpenGLTexture() :