Simplify opaqueToken support

Remove scopes convenience method to alleviate potential confusion with
the "scope" attribute.

Issue gh-7827
Issue gh-7712

test/src/test/java/org/springframework/security/test/web/reactive/server/SecurityMockServerConfigurerOpaqueTokenTests.java

@@ -90,20 +90,6 @@ public class SecurityMockServerConfigurerOpaqueTokenTests extends AbstractMockSe
 				.containsOnly(this.authority1, this.authority2);
 	}
 
-	@Test
-	public void mockOpaqueTokenWhenScopesThenBearerTokenAuthentication() {
-		this.client
-				.mutateWith(mockOpaqueToken().scopes("scoped", "authorities"))
-				.get()
-				.exchange()
-				.expectStatus().isOk();
-
-		SecurityContext context = securityContextController.removeSecurityContext();
-		assertThat((List<GrantedAuthority>) context.getAuthentication().getAuthorities())
-				.containsOnly(new SimpleGrantedAuthority("SCOPE_scoped"),
-						new SimpleGrantedAuthority("SCOPE_authorities"));
-	}
-
 	@Test
 	public void mockOpaqueTokenWhenAttributesThenBearerTokenAuthentication() {
 		String sub = new String("my-subject");

test/src/test/java/org/springframework/security/test/web/servlet/request/SecurityMockMvcRequestPostProcessorsOpaqueTokenTests.java

@@ -89,13 +89,6 @@ public class SecurityMockMvcRequestPostProcessorsOpaqueTokenTests {
 				.andExpect(status().isForbidden());
 	}
 
-	@Test
-	public void opaqueTokenWhenAuthoritiesSpecifiedThenGrantsAccess() throws Exception {
-		this.mvc.perform(get("/admin/scopes")
-				.with(opaqueToken().scopes("admin", "read")))
-				.andExpect(content().string("[\"SCOPE_admin\",\"SCOPE_read\"]"));
-	}
-
 	@Test
 	public void opaqueTokenWhenAttributeSpecifiedThenUserHasAttribute() throws Exception {
 		this.mvc.perform(get("/opaque-token/iss")