curl: remove patch (#53892)

This upstream patch needs to be removed because in latest curl, it's
already applied. This currently prevents a build from source. (And I am
wondering why that was not caught?)

deps/curl.mk

@@ -57,16 +57,7 @@ CURL_TLS_CONFIGURE_FLAGS := --with-mbedtls=$(build_prefix)
 endif
 CURL_CONFIGURE_FLAGS += $(CURL_TLS_CONFIGURE_FLAGS)
 
-$(BUILDDIR)/curl-$(CURL_VER)/source-extracted/curl-memdup.patch-applied: $(SRCCACHE)/curl-$(CURL_VER)/source-extracted
-	mkdir -p $(dir $@)
-	cd $(SRCCACHE)/curl-$(CURL_VER) && \
-		patch -p1 -f < $(SRCDIR)/patches/curl-memdup.patch
-	echo 1 > $@
-
-$(SRCCACHE)/curl-$(CURL_VER)/source-patched: $(BUILDDIR)/curl-$(CURL_VER)/source-extracted/curl-memdup.patch-applied
-	echo 1 > $@
-
-$(BUILDDIR)/curl-$(CURL_VER)/build-configured: $(SRCCACHE)/curl-$(CURL_VER)/source-patched
+$(BUILDDIR)/curl-$(CURL_VER)/build-configured: $(SRCCACHE)/curl-$(CURL_VER)/source-extracted
 	mkdir -p $(dir $@)
 	cd $(dir $@) && \
 	$(dir $<)/configure $(CURL_CONFIGURE_FLAGS) \