wasmtime: Implement table.fill

Part of #929

build.rs

@@ -203,11 +203,6 @@ fn ignore(testsuite: &str, testname: &str, strategy: &str) -> bool {
             ("simd", "simd_load") => return true, // FIXME Unsupported feature: proposed SIMD operator I32x4TruncSatF32x4S
             ("simd", "simd_splat") => return true, // FIXME Unsupported feature: proposed SIMD operator I32x4TruncSatF32x4S
 
-            // Still working on implementing these. See #929.
-            ("reference_types", "table_fill") => {
-                return true;
-            }
-
             // TODO(#1886): Ignore reference types tests if this isn't x64,
             // because Cranelift only supports reference types on x64.
             ("reference_types", _) => {