Source & Tools: No EOL Whitespaces

End-of-line (EOL) whitespaces are verbose and increase diffs and
merge conflicts over time.

Cleaned them up for the `Source/`, `Examples/` and `Tools/` directory
with the following bash one-liner:

```bash
find . -type f -not -path './.git*'  \
  -exec sed -i 's/[[:blank:]]*$//' {} \;
```

Committed as generic user so git does not credit the many lines
to me:
```bash
GIT_AUTHOR_NAME="Tools" GIT_AUTHOR_EMAIL="warpx@lbl.gov"  \
  git commit
```

1 files changed, 4 insertions, 4 deletions

diff --git a/Source/main.cpp b/Source/main.cpp
index d31268b12..6aca49cd3 100644
--- a/Source/main.cpp
+++ b/Source/main.cpp
@@ -25,18 +25,18 @@ int main(int argc, char* argv[])
     ConvertLabParamsToBoost();
 
     BL_PROFILE_VAR("main()", pmain);
-        
+
     const Real strt_total = amrex::second();
 
     {
 	WarpX warpx;
-	
+
 	warpx.InitData();
 
 	warpx.Evolve();
-	
+
 	Real end_total = amrex::second() - strt_total;
-	
+
 	ParallelDescriptor::ReduceRealMax(end_total ,ParallelDescriptor::IOProcessorNumber());
 	if (warpx.Verbose()) {
             amrex::Print() << "Total Time                     : " << end_total << '\n';