removed unnecesary styles

blank-canvas-blocks/assets/ponyfill.css

@@ -304,8 +304,6 @@ h1, h2, h3, h4, h5, h6 {
 
 .wp-block-gallery .blocks-gallery-image figcaption,
 .wp-block-gallery .blocks-gallery-item figcaption {
-	margin: var(--wp--custom--gallery--caption--margin);
-	color: var(--wp--custom--gallery--caption--color);
 	font-size: var(--wp--custom--gallery--caption--font-size);
 }
 

blank-canvas-blocks/experimental-theme.json

@@ -140,9 +140,7 @@
 				"gallery": {
 					"margin": "0 auto",
 					"caption": {
-						"margin": 0,
-						"fontSize": "var(--wp--preset--font-size--small)",
-						"color": "var(--wp--preset--color--white)"
+						"fontSize": "var(--wp--preset--font-size--small)"
 					}
 				},
 				"quote": {

blank-canvas-blocks/sass/blocks/_gallery.scss

@@ -6,9 +6,6 @@
 	.blocks-gallery-item {
 
 		figcaption {
-			margin: var(--wp--custom--gallery--caption--margin);
-			// Text color is always white to account for default gradient background
-			color: var(--wp--custom--gallery--caption--color);
 			font-size: var(--wp--custom--gallery--caption--font-size);
 		}
 	}