Remove a bunch of assume()s which are now always true.

PiperOrigin-RevId: 808961882

Author: java-team-github-bot

core/src/test/java/com/google/googlejavaformat/java/ModifierOrdererTest.java

@@ -17,7 +17,6 @@
 package com.google.googlejavaformat.java;
 
 import static com.google.common.truth.Truth.assertThat;
-import static com.google.common.truth.TruthJUnit.assume;
 
 import com.google.common.base.Joiner;
 import com.google.common.collect.Range;
@@ -107,7 +106,6 @@ public void whitespace() throws FormatterException {
 
   @Test
   public void sealedClass() throws FormatterException {
-    assume().that(Runtime.version().feature()).isAtLeast(16);
     assertThat(ModifierOrderer.reorderModifiers("non-sealed sealed public").getText())
         .isEqualTo("public sealed non-sealed");
   }