remove rust/cargo from compilation

it has become clear that incorperating rust in this project was a
mistake, since I don't understand it well enough for it to be useful,
and at this rate it'd be faster to use GLFW in C than in rust.

makefile

@@ -13,18 +13,11 @@ CSTD    := c17
 CFLAGS  := $(shell pkg-config --cflags glfw3) -Wall -Wextra -Wpedantic -Wno-pointer-arith -static
 LDFLAGS := $(shell pkg-config --libs glfw3)
 
-# Rust compiler options
-RUSTC   := cargo rustc
-RSFLAGS :=
-
 ifeq ($(DEBUG),1)
 CFLAGS  += -g -Og
-RSOUT   := debug
 PROF    := dbg
 else
 CFLAGS  += -DNDEBUG -O2 -Werror
-RSOUT   := release
-RSFLAGS := --release
 PROF    := rel
 endif
 
@@ -32,13 +25,9 @@ ifneq ($(MAKECMDGOALS),clean)
 ifeq      ($(ARCH),linux-x86_64)
 CFLAGS  += -target x86_64-pc-linux-gnu
 LDFLAGS += -target x86_64-pc-linux-gnu
-RSFLAGS += --target=x86_64-unknown-linux-gnu
-RSOUT   := target/x86_64-unknown-linux-gnu/$(RSOUT)
 else ifeq ($(ARCH),win-x86_64)
 CFLAGS  += -target x86_64-pc-windows-gnu
 LDFLAGS += -target x86_64-pc-windows-gnu
-RSFLAGS += --target=x86_64-pc-windows-gnu
-RSOUT   := target/x86_64-pc-windows-gnu/$(RSOUT)
 EXT     := .exe
 else
 $(error you must set the ARCH environment variable to one of these: 'linux-x86_64' 'win-x86_64')
@@ -53,10 +42,6 @@ BIN       := $(DIR_BIN)/$(NAME)$(EXT)
 C_SRC  := $(shell find src/ -name '*.c')
 C_OBJ  := $(patsubst src/%,$(DIR_OBJ)/%,$(C_SRC:.c=.o))
 C_DEP  := $(C_OBJ:.o=.d)
-RS_SRC := $(shell find src/ -name '*.rs')
-RS_LIB := $(RSOUT)/libmcaselector_lite.a
-RS_DEP := $(RSOUT)/libmcaselector_lite.d
-RSOUT  :=
 endif
 
 define log_col
@@ -73,20 +58,18 @@ run: compile
 compile: compile_commands.json $(BIN)
 clean:
 	@$(call warn,"cleaning!")
-	rm -rf bin/ obj/ target/ compile_commands.json
+	rm -rf bin/ obj/ compile_commands.json
 # TODO: write a structure for the unit tests in this
 
 # create the binary (linking step)
-$(BIN): $(C_OBJ) $(RS_LIB)
-	@$(call mesg,"RUSTC: '$(RUSTC)'")
+$(BIN): $(C_OBJ)
 	@$(call mesg,"CC: '$(CC)'")
 	@$(call mesg,"CFLAGS: '$(CFLAGS)'")
-	@$(call mesg,"RSFLAGS: '$(RSFLAGS)'")
 	@$(call mesg,"LDFLAGS: '$(LDFLAGS)'")
 	@$(call comp,"linking to: '$@'")
 
 	@mkdir -p $(@D)
-	@$(CC) $(LDFLAGS) -o $@ $(C_OBJ) $(RS_LIB)
+	@$(CC) $(LDFLAGS) -o $@ $(C_OBJ)
 	@$(call warn,"current profile: '$(PROF)'")
 
 # create .o and .d files for C sources
@@ -95,10 +78,6 @@ $(DIR_OBJ)/%.o: src/%.c
 	@mkdir -p $(@D)
 	@$(CC) $(CFLAGS) -c -MD -MP -std=$(CSTD) -x c -o $@ $<
 
-# create .o and .d files for the entire rust codebase
-$(RS_LIB): $(RS_SRC)
-	$(RUSTC) $(RSFLAGS)
-
 # update compile commands if the makefile has been updated (for linting)
 ifneq ($(shell which bear),)
 compile_commands.json: makefile
@@ -114,4 +93,3 @@ endif
 
 # include the dependencies
 -include $(C_DEP)
--include $(RS_DEP)