Remove BDB block database support

src/makefile.linux-mingw

@@ -6,7 +6,6 @@ DEPSDIR:=/usr/i586-mingw32msvc
 
 USE_UPNP:=0
 USE_IPV6:=1
-USE_LEVELDB:=1
 
 INCLUDEPATHS= \
  -I"$(CURDIR)" \
@@ -83,21 +82,18 @@ OBJS= \
     obj/util.o \
     obj/wallet.o \
     obj/walletdb.o \
-    obj/noui.o
+    obj/noui.o \
+    obj/leveldb.o \
+    obj/txdb.o
 
 all: bitcoind.exe
 
-ifdef USE_LEVELDB
 LIBS += $(CURDIR)/leveldb/libleveldb.a $(CURDIR)/leveldb/libmemenv.a
-DEFS += -I"$(CURDIR)/leveldb/include" -DUSE_LEVELDB
+DEFS += -I"$(CURDIR)/leveldb/include"
 DEFS += -I"$(CURDIR)/leveldb/helpers"
-OBJS += obj/leveldb.o obj/txdb-leveldb.o
 leveldb/libleveldb.a:
 	@echo "Building LevelDB ..."; cd leveldb; TARGET_OS=OS_WINDOWS_CROSSCOMPILE CXXFLAGS="-I$(INCLUDEPATHS)" LDFLAGS="-L$(LIBPATHS)" make libleveldb.a libmemenv.a; cd ..
 obj/leveldb.o: leveldb/libleveldb.a
-else
-OBJS += obj/txdb-bdb.o
-endif
 
 obj/build.h: FORCE
 	/bin/sh ../share/genbuild.sh obj/build.h