[SPARK-38153][BUILD] Remove option newlines.topLevelStatements in scalafmt.conf
[SPARK-38153][BUILD] Remove option newlines.topLevelStatements in scalafmt.conf

### What changes were proposed in this pull request?

Remove option newlines.topLevelStatements in scalafmt.conf

### Why are the changes needed?

The configuration
```
newlines.topLevelStatements = [before,after]
```
is to add a blank line before the first member or after the last member of the class. This is neither encouraged nor discouraged as per https://github.com/databricks/scala-style-guide#blanklines

**Without the conf, scalafmt will still add blank lines between consecutive members (or initializers) of a class.**

As I tried running the script `./dev/scalafmt`, I saw unnessary blank lines
![image](https://user-images.githubusercontent.com/1097932/153122925-3238f15c-312b-4973-8e2d-92978bf5c6ad.png)

### Does this PR introduce _any_ user-facing change?

No

### How was this patch tested?

Manual test

Closes #35455 from gengliangwang/removeToplevelLine.

Authored-by: Gengliang Wang <789196f1837e809005c9b5b207ae21d5a78ca970@apache.org>
Signed-off-by: Dongjoon Hyun <6ff48b33cbb828151035af58a92f18a39f1d1036@apache.org>

JoshRosen/spark,WeichenXu123/spark,zero323/spark,HyukjinKwon/spark,zero323/spark,apache/spark,shaneknapp/spark,apache/spark,hvanhovell/spark,rednaxelafx/apache-spark,gengliangwang/spark,vinodkc/spark,gengliangwang/spark,vinodkc/spark,vinodkc/spark,holdenk/spark,srowen/spark,holdenk/spark,ueshin/apache-spark,hvanhovell/spark,dongjoon-hyun/spark,wangyum/spark,WeichenXu123/spark,dongjoon-hyun/spark,srowen/spark,cloud-fan/spark,shaneknapp/spark,HyukjinKwon/spark,nchammas/spark,holdenk/spark,JoshRosen/spark,gengliangwang/spark,ueshin/apache-spark,ueshin/apache-spark,witgo/spark,nchammas/spark,WeichenXu123/spark,nchammas/spark,holdenk/spark,zero323/spark,HyukjinKwon/spark,apache/spark,cloud-fan/spark,HyukjinKwon/spark,ueshin/apache-spark,wangyum/spark,zero323/spark,zzcclp/spark,vinodkc/spark,nchammas/spark,mahak/spark,holdenk/spark,cloud-fan/spark,shaneknapp/spark,dongjoon-hyun/spark,zero323/spark,zzcclp/spark,wangyum/spark,HyukjinKwon/spark,apache/spark,nchammas/spark,zzcclp/spark,JoshRosen/spark,srowen/spark,dongjoon-hyun/spark,shaneknapp/spark,wangyum/spark,WeichenXu123/spark,apache/spark,mahak/spark,JoshRosen/spark,witgo/spark,vinodkc/spark,zero323/spark,hvanhovell/spark,WeichenXu123/spark,zzcclp/spark,hvanhovell/spark,dongjoon-hyun/spark,mahak/spark,cloud-fan/spark,hvanhovell/spark,nchammas/spark,mahak/spark,witgo/spark,gengliangwang/spark,rednaxelafx/apache-spark,cloud-fan/spark,cloud-fan/spark,gengliangwang/spark,dongjoon-hyun/spark,gengliangwang/spark,rednaxelafx/apache-spark,srowen/spark,wangyum/spark,mahak/spark,wangyum/spark,witgo/spark,holdenk/spark,shaneknapp/spark,zzcclp/spark,srowen/spark,vinodkc/spark,HyukjinKwon/spark,ueshin/apache-spark,mahak/spark,witgo/spark,ueshin/apache-spark,rednaxelafx/apache-spark,rednaxelafx/apache-spark,srowen/spark,wangyum/spark,witgo/spark,apache/spark,cloud-fan/spark,ueshin/apache-spark,JoshRosen/spark,rednaxelafx/apache-spark,witgo/spark,shaneknapp/spark,WeichenXu123/spark,zzcclp/spark,vinodkc/spark,hvanhovell/spark,WeichenXu123/spark,JoshRosen/spark,dongjoon-hyun/spark,hvanhovell/spark,zzcclp/spark,gengliangwang/spark,nchammas/spark,srowen/spark,HyukjinKwon/spark,shaneknapp/spark,rednaxelafx/apache-spark,apache/spark,holdenk/spark,mahak/spark,zero323/spark,JoshRosen/spark