Fix KT-16725; Remove spaces between array indices

idea/testData/formatter/ArrayAccess.after.kt

@@ -8,13 +8,13 @@ fun test() {
             1, 2
             ]
 
-    a    [
+    a[
 
             1, 2
 
             ]
 
-    a    [
+    a[
 
 
             1, 2

idea/testData/formatter/SpaceBeforeIndices.after.kt

@@ -0,0 +1,2 @@
+val array = emptyArray<Any>()
+val foo = array[0]

idea/testData/formatter/SpaceBeforeIndices.kt

@@ -0,0 +1,2 @@
+val array = emptyArray<Any>()
+val foo = array   [0]

idea/testData/quickfix/addNewLineAfterAnnotations/poorlyFormattedExpression.kt.after

@@ -6,5 +6,5 @@ annotation class Ann
 fun foo(y: IntArray) {
     // Currently it calls reformatting of base expression, but it seems to be a minor issue
     @Ann
-    y [0 + 9 * 4] = y[y [1]]
+    y[0 + 9 * 4] = y[y [1]]
 }