Remove support for OpenMP again.

Because it doesn't work together with ADOL-C, claims the programmer
of ADOL-C.

[[Imported from SVN: r9437]]

Makefile.am

@@ -12,7 +12,7 @@ AM_CPPFLAGS += $(IPOPT_CPPFLAGS)
 noinst_PROGRAMS = cosserat-continuum rodobstacle rod3d harmonicmaps harmonicmaps-eoc dirneucoupling rod-eoc
 
 cosserat_continuum_SOURCES  = cosserat-continuum.cc
-cosserat_continuum_CXXFLAGS = $(UG_CPPFLAGS) $(AMIRAMESH_CPPFLAGS) $(IPOPT_CPPFLAGS) $(PSURFACE_CPPFLAGS) -fopenmp
+cosserat_continuum_CXXFLAGS = $(UG_CPPFLAGS) $(AMIRAMESH_CPPFLAGS) $(IPOPT_CPPFLAGS) $(PSURFACE_CPPFLAGS)
 cosserat_continuum_LDADD    = $(UG_LDFLAGS) $(AMIRAMESH_LDFLAGS) $(UG_LIBS) $(AMIRAMESH_LIBS) \
                               $(IPOPT_LDFLAGS) $(IPOPT_LIBS) $(PSURFACE_LDFLAGS) $(PSURFACE_LIBS)