fix: remove makevars.ucrt template and cargo_linker in makevars.win template (#422)

* fix: remove makevars.ucrt template and cargo_linker in makevars.win template

* tests: update use_extendr snapshot

Author: albersonmiranda

inst/templates/Makevars.ucrt

@@ -28,7 +28,6 @@ $(STATLIB):
 
 	# Build the project using Cargo with additional flags
 	export CARGO_HOME=$(CARGOTMP) && \
-	export CARGO_TARGET_X86_64_PC_WINDOWS_GNU_LINKER="$(CARGO_LINKER)" && \
 	export LIBRARY_PATH="$(LIBRARY_PATH);$(CURDIR)/$(TARGET_DIR)/libgcc_mock" && \
 	RUSTFLAGS="$(RUSTFLAGS) --print=native-static-libs" cargo build @CRAN_FLAGS@ --target=$(TARGET) --lib @PROFILE@ --manifest-path=rust/Cargo.toml --target-dir=$(TARGET_DIR)
 

inst/templates/Makevars.win.in

@@ -287,7 +287,6 @@
       
       	# Build the project using Cargo with additional flags
       	export CARGO_HOME=$(CARGOTMP) && \
-      	export CARGO_TARGET_X86_64_PC_WINDOWS_GNU_LINKER="$(CARGO_LINKER)" && \
       	export LIBRARY_PATH="$(LIBRARY_PATH);$(CURDIR)/$(TARGET_DIR)/libgcc_mock" && \
       	RUSTFLAGS="$(RUSTFLAGS) --print=native-static-libs" cargo build @CRAN_FLAGS@ --target=$(TARGET) --lib @PROFILE@ --manifest-path=rust/Cargo.toml --target-dir=$(TARGET_DIR)