Remove automake support

Since the cmake tool chain is now stable, the automake tool chain is removed from musrfit.
This makes documentation and code less cluttered.

src/external/TLemRunHeader/Makefile.am

@@ -1,49 +0,0 @@
-## Process this file with automake to create Makefile.in
-
-h_sources = \
-  TLemStats.h \
-  TLemRunHeader.h
-
-h_linkdef = \
-  TLemStatsLinkDef.h \
-  TLemRunHeaderLinkDef.h
-
-dict_h_sources = \
-  TLemStatsDict.h \
-  TLemRunHeaderDict.h
-
-cpp_sources = \
-  TLemStats.cxx \
-  TLemRunHeader.cxx
-
-dict_cpp_sources = \
-  TLemStatsDict.cxx \
-  TLemRunHeaderDict.cxx
-
-pcmdir = $(libdir)
-pcm_DATA = \
-  TLemStatsDict_rdict.pcm \
-  TLemRunHeaderDict_rdict.pcm
-
-include_HEADERS = $(h_sources)
-noinst_HEADERS = $(h_linkdef) $(dict_h_sources)
-
-AM_CPPFLAGS = -I. -I$(ROOTINCDIR)
-AM_CXXFLAGS = $(LOCAL_LIB_CXXFLAGS)
-
-BUILT_SOURCES = $(dict_cpp_sources) $(dist_h_sources)
-AM_LDFLAGS = $(LOCAL_LIB_LDFLAGS) -L@ROOTLIBDIR@
-CLEANFILES = *Dict.cxx *Dict.h *Dict* *~ core
-
-%Dict.cxx %Dict.h: %.h %LinkDef.h
-	@ROOTCLING@ -v -f $*Dict.cxx -c -p $(INCLUDES) $^
-
-lib_LTLIBRARIES = libTLemRunHeader.la
-
-libTLemRunHeader_la_SOURCES = $(h_sources) $(cpp_sources) $(dict_h_sources) $(dict_cpp_sources)
-libTLemRunHeader_la_LIBADD = $(ROOT_LIBS)
-libTLemRunHeader_la_LDFLAGS = -version-info $(LEM_LIBRARY_VERSION) -release $(LEM_RELEASE) $(AM_LDFLAGS)
-
-pkgconfigdir = $(libdir)/pkgconfig
-pkgconfig_DATA = TLemRunHeader.pc
-