Revert "R8/D8 should use sdk_version prop to determine API surface stability."

This reverts commit daa220ae8c.

Reason for revert: Suspected to be a cause for build failure (b/264446640). Will use go/abtd to verify

Change-Id: Ibfdf893f2426b1119923467027e0acedd08808c1

java/dex_test.go

@@ -41,7 +41,6 @@ func TestR8(t *testing.T) {
 			name: "core_platform_app",
 			srcs: ["foo.java"],
 			sdk_version: "core_platform",
-			min_sdk_version: "31",
 		}
 
 		java_library {