3.x: Multiple empty line detection to ignore whitespace (#6662)

* 3.x: style check for two subsequent empty lines in source files

* Remove the separate file.

Author: akarnokd

src/main/java/io/reactivex/rxjava3/core/Flowable.java

@@ -15326,7 +15326,6 @@ public final <R> Flowable<R> switchMapSingleDelayError(@NonNull Function<? super
         return RxJavaPlugins.onAssembly(new FlowableSwitchMapSingle<T, R>(this, mapper, true));
     }
 
-    
     /**
      * Returns a Flowable that emits only the first {@code count} items emitted by the source Publisher. If the source emits fewer than
      * {@code count} items then all of its items are emitted.
@@ -15368,7 +15367,7 @@ public final <R> Flowable<R> switchMapSingleDelayError(@NonNull Function<? super
      * @see <a href="http://reactivex.io/documentation/operators/take.html">ReactiveX operators documentation: Take</a>
      */
     @CheckReturnValue
-    @BackpressureSupport(BackpressureKind.FULL) 
+    @BackpressureSupport(BackpressureKind.FULL)
     @SchedulerSupport(SchedulerSupport.NONE)
     public final Flowable<T> take(long count) {
         if (count < 0) {

src/test/java/io/reactivex/rxjava3/internal/operators/flowable/FlowableTakeTest.java

@@ -142,7 +142,7 @@ public void subscribe(Subscriber<? super String> subscriber) {
             RxJavaPlugins.reset();
         }
     }
-    
+
     @Test
     public void takeEmitsErrors() {
         Flowable.error(new TestException())
@@ -151,7 +151,7 @@ public void takeEmitsErrors() {
             .assertNoValues()
             .assertError(TestException.class);
     }
-    
+
     @Test
     public void takeRequestOverflow() {
         TestSubscriber<Integer> ts = Flowable.just(1, 2, 3)

src/test/java/io/reactivex/rxjava3/validators/TooManyEmptyNewLines.java

@@ -101,7 +101,7 @@ static void findPattern(int newLines) throws Exception {
                                 if (line1.isEmpty()) {
                                     int c = 1;
                                     for (int j = i + 1; j < lines.size(); j++) {
-                                        if (lines.get(j).isEmpty()) {
+                                        if (lines.get(j).trim().isEmpty()) {
                                             c++;
                                         } else {
                                             break;