turn back on NeighborParticles test for 1D

Author: atmyers

Tests/Particles/NeighborParticles/CMakeLists.txt

@@ -1,7 +1,4 @@
 foreach(D IN LISTS AMReX_SPACEDIM)
-    if (D EQUAL 1)
-       continue()
-    endif ()
 
     set(_sources CheckPair.H Constants.H main.cpp  MDParticleContainer.cpp MDParticleContainer.H )