Remove makefile for openlibm-extras

Makefile.extras

@@ -1,31 +0,0 @@
-OPENLIBM_HOME=$(abspath .)
-include ./Make.inc
-
-SUBDIRS = amos Faddeeva
-
-define INC_template
-TEST=test
-override CUR_SRCS = $(1)_SRCS
-include $(1)/Make.files
-SRCS += $$(addprefix $(1)/,$$($(1)_SRCS))
-endef
-
-DIR=test
-
-$(foreach dir,$(SUBDIRS),$(eval $(call INC_template,$(dir))))
-
-DUPLICATE_NAMES = $(filter $(patsubst %.S,%,$($(ARCH)_SRCS)),$(patsubst %.c,%,$(src_SRCS)))
-DUPLICATE_SRCS = $(addsuffix .c,$(DUPLICATE_NAMES))
-
-OBJS =  $(patsubst %.f,%.f.o,\
-	$(patsubst %.S,%.S.o,\
-	$(patsubst %.c,%.c.o,$(filter-out $(addprefix src/,$(DUPLICATE_SRCS)),$(SRCS)))))
-
-all: libopenlibm-extras.a libopenlibm-extras.$(SHLIB_EXT) 
-libopenlibm-extras.a: $(OBJS)  
-	$(AR) -rcs libopenlibm-extras.a $(OBJS)
-libopenlibm-extras.$(SHLIB_EXT): $(OBJS)
-	$(FC) -shared $(OBJS) $(LDFLAGS) -o libopenlibm-extras.$(SHLIB_EXT)
-
-distclean:
-	rm -f $(OBJS) *.a *.$(SHLIB_EXT)