Revert "feat: add online speaker images and names (#409)" (#422)

This reverts commit 6cbab41.

config/speakers.json

@@ -1,4 +1,3 @@
-
 [
 	{
 		"location": "",
@@ -171,46 +170,7 @@
 	{
 		"city": "Online",
 		"location": "Online Edition",
-		"lists": [			{
-			"name": "Hari Krishnan",
-			"title": "Co-founder, CTO at Specmatic",
-			"img": "img/online-conf-images/HariKrishanan.webp"
-		},
-		{
-			"name": "Yuan Yuan",
-			"title": "Software Engineer",
-			"img": "img/online-conf-images/YuanYuan.webp"
-		},
-		{
-			"name": "Ivan Garcia Sainz-Aja",
-			"title": "Java Architect",
-			"img": "img/online-conf-images/IvanGarciaSainz-Aja.webp"
-		},
-		{
-			"name": "Atinuke Oluwabamikemi Kayode",
-			"title": "Community Marketing Specialist at AsyncAPI Initiative",
-			"img": "img/online-conf-images/AtinukeOluwabamikemiKayode.webp"
-		},
-		{
-			"name": "Aishat Muibudeen",
-			"title": "Product Designer and UX Researcher",
-			"img": "img/online-conf-images/AISHAT(Maya)MUIBUDEEN.webp"
-		},		
-		{
-			"name": "Thulisile Sibanda",
-			"title": "Community Manager at AsyncAPI Initiative",
-			"img": "img/online-conf-images/VThulisileSibanda.webp"
-		},
-		{
-			"name": "Ankit Dash",
-			"title": "Full Stack Developer",
-			"img": "img/online-conf-images/AnkitDash.webp"
-		},
-		{
-			"name": "Giri Venkatesan",
-			"title": "Principal Developer Advocate and Architect at Solace",
-			"img": "img/online-conf-images/GiriVenkatesan.webp"
-		}],
+		"lists": [],
 		"agenda": null
 	}
 ]