Remove SWFFT and HPGMG (#4211)

Author: WeiqunZhang

.codespellrc

@@ -1,3 +1,3 @@
 [codespell]
-skip = .git,*.ipynb,*.bib,*.ps,*.patch,*~,CHANGES,*/Extern/SWFFT,*/Extern/hpgmg,./tmp_install_dir,./installdir,*/build,*/tmp_build_dir
+skip = .git,*.ipynb,*.bib,*.ps,*.patch,*~,CHANGES,./tmp_install_dir,./installdir,*/build,*/tmp_build_dir
 ignore-words = .codespell-ignore-words

Docs/Doxygen/doxygen.conf

@@ -2046,15 +2046,13 @@ INCLUDE_PATH           = ../../Src/Base \
                          ../../Src/Boundary \
                          ../../Src/Extern \
                          ../../Src/Extern/HYPRE \
-                         ../../Src/Extern/hpgmg \
                          ../../Src/Extern/HDF5 \
                          ../../Src/Extern/PETSc \
                          ../../Src/Extern/amrdata \
                          ../../Src/Extern/Conduit \
                          ../../Src/Extern/SUNDIALS \
                          ../../Src/Extern/ProfParser \
                          ../../Src/Extern/SENSEI \
-                         ../../Src/Extern/SWFFT \
                          ../../Src/AmrCore \
                          ../../Src/LinearSolvers \
                          ../../Src/LinearSolvers/MLMG \

Docs/sphinx_documentation/source/External_Frameworks_Chapter.rst

@@ -7,4 +7,3 @@ External Frameworks
    :maxdepth: 1
 
    SUNDIALS_top
-   SWFFT