Delete a lot of libsnark stuff

src/Makefile.am

@@ -27,8 +27,6 @@ BITCOIN_INCLUDES += -I$(srcdir)/secp256k1/include
 BITCOIN_INCLUDES += -I$(srcdir)/cryptoconditions/include
 BITCOIN_INCLUDES += -I$(srcdir)/cryptoconditions/src
 BITCOIN_INCLUDES += -I$(srcdir)/cryptoconditions/src/asn
-BITCOIN_INCLUDES += -I$(srcdir)/snark
-BITCOIN_INCLUDES += -I$(srcdir)/snark/libsnark
 BITCOIN_INCLUDES += -I$(srcdir)/univalue/include
 
 if TARGET_WINDOWS
@@ -48,7 +46,6 @@ LIBBITCOIN_UTIL=libbitcoin_util.a
 LIBBITCOIN_CRYPTO=crypto/libbitcoin_crypto.a
 LIBSECP256K1=secp256k1/libsecp256k1.la
 LIBCRYPTOCONDITIONS=cryptoconditions/libcryptoconditions_core.la
-LIBSNARK=snark/libsnark.a
 LIBUNIVALUE=univalue/libunivalue.la
 LIBZCASH=libzcash.a
 
@@ -77,12 +74,6 @@ if TARGET_DARWIN
 LIBSNARK_CONFIG_FLAGS += PLATFORM=darwin
 endif
 
-$(LIBSNARK): $(wildcard snark/src/*)
-	$(AM_V_at) CC="$(CC)" CXX="$(CXX)" AR="$(AR)" CXXFLAGS="$(LIBSNARK_CXXFLAGS)" $(MAKE) $(AM_MAKEFLAGS) -C snark/ DEPINST="$(LIBSNARK_DEPINST)" $(LIBSNARK_CONFIG_FLAGS) OPTFLAGS="-O2 -march=x86-64"
-
-libsnark-tests: $(wildcard snark/src/*)
-	$(AM_V_at) CC="$(CC)" CXX="$(CXX)" AR="$(AR)" CXXFLAGS="$(LIBSNARK_CXXFLAGS)" $(MAKE) $(AM_MAKEFLAGS) -C snark/ check DEPINST="$(LIBSNARK_DEPINST)" $(LIBSNARK_CONFIG_FLAGS) OPTFLAGS="-O2 -march=x86-64"
-
 $(LIBUNIVALUE): $(wildcard univalue/lib/*)
 	$(AM_V_at)$(MAKE) $(AM_MAKEFLAGS) -C $(@D) $(@F) OPTFLAGS="-O2 -march=x86-64 -g "
 
@@ -139,7 +130,7 @@ LIBZCASH_H = \
   zcash/Zcash.h \
   zcash/zip32.h
 
-.PHONY: FORCE collate-libsnark check-symbols check-security
+.PHONY: FORCE check-symbols check-security
 # bitcoin core #
 BITCOIN_CORE_H = \
   addressindex.h \
@@ -708,12 +699,11 @@ CLEANFILES = leveldb/libleveldb.a leveldb/libmemenv.a *.gcda *.gcno */*.gcno wal
 
 DISTCLEANFILES = obj/build.h
 
-EXTRA_DIST = leveldb snark
+EXTRA_DIST = leveldb
 
 clean-local:
 	-$(MAKE) -C leveldb clean
 	-$(MAKE) -C secp256k1 clean
-	-$(MAKE) -C snark clean
 	-$(MAKE) -C univalue clean
 	rm -f leveldb/*/*.gcno leveldb/helpers/memenv/*.gcno
 	-rm -f config.h