Fix compilation problems with cpp-netlib and cpp-driver on newer OSX clang compilers

Makefile

@@ -178,7 +178,6 @@ $(DCDBDEPSPATH)/cpp-driver-$(CPPDRV_VERSION)/.built: $(DCDBDEPSPATH)/cpp-driver-
 	mkdir -p $(DCDBDEPSPATH)/cpp-driver_build
 	cd $(DCDBDEPSPATH)/cpp-driver_build && \
 	CC=$(FULL_CC) CXX=$(FULL_CXX) cmake $(CMAKE_CROSS_FLAGS) \
-		-DCMAKE_CXX_FLAGS="-L$(DCDBDEPLOYPATH)/lib " \
 		-DOPENSSL_ROOT_DIR=$(DCDBDEPSPATH)/openssl-$(OPENSSL_VERSION) \
 		-DLIBUV_ROOT_DIR=$(DCDBDEPSPATH)/libuv-v$(LIBUV_VERSION) \
 		-DCASS_BUILD_EXAMPLES=NO \
@@ -198,7 +197,6 @@ $(DCDBDEPSPATH)/cpp-netlib-$(CPPNET_VERSION)/.built: $(DCDBDEPSPATH)/cpp-netlib-
 	mkdir -p $(DCDBDEPSPATH)/cpp-netlib_build
 	cd $(DCDBDEPSPATH)/cpp-netlib_build && \
 	CC=$(FULL_CC) CXX=$(FULL_CXX) cmake $(CMAKE_CROSS_FLAGS) \
-		-DCMAKE_CXX_FLAGS="-L$(DCDBDEPLOYPATH)/lib " \
 		-DCPP-NETLIB_ENABLE_HTTPS=off \
 		-DCPP-NETLIB_BUILD_TESTS=OFF \
 		-DCPP-NETLIB_BUILD_EXAMPLES=OFF \