Infra-4225 replaced the image for ad no.15

Signed-off-by: Zhou Fang <zhou.fang@eclipse-foundation.org>

Change-Id: I9979e135ad30f5057134fdfe011dd4e68b051da7
diff --git a/promo/images/iot-and-edge-commercial-adoption-survey-report.jpg b/promo/images/iot-and-edge-commercial-adoption-survey-report.jpg
new file mode 100644
index 0000000..18a21d7
--- /dev/null
+++ b/promo/images/iot-and-edge-commercial-adoption-survey-report.jpg
Binary files differ
diff --git a/promo/images/openvsx_white_paper_2021.png b/promo/images/openvsx_white_paper_2021.png
deleted file mode 100644
index b1b6b36..0000000
--- a/promo/images/openvsx_white_paper_2021.png
+++ /dev/null
Binary files differ