cleaned up grid tests (organized imports)

Author: Torsten-Mumme

src/test/java/net/itarray/automotion/tests/grid/SevenElementsInThreeRowsWithDifferentSizesAndGuttersTest.java

@@ -1,10 +1,7 @@
 package net.itarray.automotion.tests.grid;
 
-import net.itarray.automotion.internal.ResponsiveUIValidatorBase;
 import org.junit.Test;
 
-import static org.assertj.core.api.Assertions.assertThat;
-
 @Chunk({
         @Element({100,  50,  300,  60}),
         @Element({400,  50,  700,  70}),

src/test/java/net/itarray/automotion/tests/grid/ThreeElementsInARowWithDifferentSizesAndGuttersTest.java

@@ -1,12 +1,7 @@
 package net.itarray.automotion.tests.grid;
 
-import net.itarray.automotion.internal.ResponsiveUIValidatorBase;
 import org.junit.Test;
 
-import static com.google.common.collect.Lists.newArrayList;
-import static org.assertj.core.api.Assertions.assertThat;
-import static rectangles.DummyWebElement.createElement;
-
 @Chunk({
         @Element({100, 50,  300, 60}),
         @Element({400, 50,  700, 60}),