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/Parallelization/WarpXRegrid.cpp b/Source/Parallelization/WarpXRegrid.cpp
index 9b3baafe1..c737591c7 100644
--- a/Source/Parallelization/WarpXRegrid.cpp
+++ b/Source/Parallelization/WarpXRegrid.cpp
@@ -33,11 +33,11 @@ WarpX::RemakeLevel (int lev, Real time, const BoxArray& ba, const DistributionMa
     {
         if (ParallelDescriptor::NProcs() == 1) return;
 
-#ifdef WARPX_DO_ELECTROSTATIC        
+#ifdef WARPX_DO_ELECTROSTATIC
         AMREX_ALWAYS_ASSERT(masks[lev] == nullptr);
         AMREX_ALWAYS_ASSERT(gather_masks[lev] == nullptr);
 #endif // WARPX_DO_ELECTROSTATIC
-        
+
         // Fine patch
 
         const auto& period = Geom(lev).periodicity();
@@ -203,7 +203,7 @@ WarpX::RemakeLevel (int lev, Real time, const BoxArray& ba, const DistributionMa
                 auto pmf = std::unique_ptr<iMultiFab>(new iMultiFab(current_buffer_masks[lev]->boxArray(),
                                                                     dm, current_buffer_masks[lev]->nComp(), ng));
                 // pmf->ParallelCopy(*current_buffer_masks[lev], 0, 0, current_buffer_masks[lev]->nComp(), ng, ng);
-                current_buffer_masks[lev] = std::move(pmf);                
+                current_buffer_masks[lev] = std::move(pmf);
             }
             if (gather_buffer_masks[lev])
             {
@@ -211,7 +211,7 @@ WarpX::RemakeLevel (int lev, Real time, const BoxArray& ba, const DistributionMa
                 auto pmf = std::unique_ptr<iMultiFab>(new iMultiFab(gather_buffer_masks[lev]->boxArray(),
                                                                     dm, gather_buffer_masks[lev]->nComp(), ng));
                 // pmf->ParallelCopy(*gather_buffer_masks[lev], 0, 0, gather_buffer_masks[lev]->nComp(), ng, ng);
-                gather_buffer_masks[lev] = std::move(pmf);                
+                gather_buffer_masks[lev] = std::move(pmf);
             }
         }