Remove unnecessary mocking

Fixes gh-8012

oauth2/oauth2-client/src/test/java/org/springframework/security/oauth2/client/web/server/OAuth2AuthorizationCodeGrantWebFilterTests.java

@@ -69,7 +69,6 @@ public class OAuth2AuthorizationCodeGrantWebFilterTests {
 		this.filter = new OAuth2AuthorizationCodeGrantWebFilter(
 				this.authenticationManager, this.clientRegistrationRepository,
 				this.authorizedClientRepository);
-		when(this.authorizationRequestRepository.loadAuthorizationRequest(any())).thenReturn(Mono.empty());
 		this.filter.setAuthorizationRequestRepository(this.authorizationRequestRepository);
 	}
 

web/src/test/java/org/springframework/security/web/servlet/util/matcher/MvcRequestMatcherTests.java

@@ -66,9 +66,6 @@ public class MvcRequestMatcherTests {
 
 	@Test
 	public void extractUriTemplateVariablesSuccess() throws Exception {
-		when(this.introspector.getMatchableHandlerMapping(this.request))
-				.thenReturn(this.mapping);
-
 		this.matcher = new MvcRequestMatcher(this.introspector, "/{p}");
 		when(this.introspector.getMatchableHandlerMapping(this.request)).thenReturn(null);