Infra-4330 Deleted ad imgs for 12, 13, 14, 16 and 17

Signed-off-by: Zhou Fang <zhou.fang@eclipse-foundation.org>
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diff --git a/promo/images/ecd-tools-white-paper.png b/promo/images/ecd-tools-white-paper.png
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diff --git a/promo/images/enabling_digital_transformation.png b/promo/images/enabling_digital_transformation.png
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diff --git a/promo/images/entrepreneurial-opensource-podcast.jpg b/promo/images/entrepreneurial-opensource-podcast.jpg
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diff --git a/promo/images/jakarta_ee_white_paper_2021.png b/promo/images/jakarta_ee_white_paper_2021.png
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