Delete haiku-rust

This phony target does not have any deps since soong does not set
`SOONG_RUST_FUZZ_PACKAGING_ARCH_MODULES` selectively for rust. Since
this phony target is unused in presubmits/postsubmits, delete it.

Test: m nothing
Bug: 414484738
Change-Id: Ia5113e395ff94d8c26f5245e5eaa240515917b18

core/Makefile

diff --git a/core/Makefile b/core/Makefile
index 20cce25..cf1e13a 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -7961,10 +7961,6 @@
 .PHONY: haiku-java
 haiku-java: $(SOONG_JAVA_FUZZ_PACKAGING_ARCH_MODULES) $(ALL_JAVA_FUZZ_TARGETS)
 $(call dist-for-goals,haiku-java,$(SOONG_JAVA_FUZZ_PACKAGING_ARCH_MODULES))
-.PHONY: haiku-rust
-haiku-rust: $(SOONG_RUST_FUZZ_PACKAGING_ARCH_MODULES) $(ALL_RUST_FUZZ_TARGETS)
-$(call dist-for-goals,haiku-rust,$(SOONG_RUST_FUZZ_PACKAGING_ARCH_MODULES))
-$(call dist-for-goals,haiku-rust,$(PRODUCT_OUT)/module-info.json)
 .PHONY: haiku-presubmit
 haiku-presubmit: $(SOONG_PRESUBMIT_FUZZ_PACKAGING_ARCH_MODULES) $(ALL_PRESUBMIT_FUZZ_TARGETS)
 $(call dist-for-goals,haiku-presubmit,$(SOONG_PRESUBMIT_FUZZ_PACKAGING_ARCH_MODULES))