[flang][tco] Remove unneeded dependencies

`tco` does not generate machine code, so it does not require (machine)
code-gen related dependencies.

Differential Revision: https://reviews.llvm.org/D118112

Author: banach-space

flang/tools/tco/CMakeLists.txt

@@ -1,7 +1,3 @@
-set(LLVM_LINK_COMPONENTS
-  ${LLVM_TARGETS_TO_BUILD}
-)
-
 add_flang_tool(tco tco.cpp)
 llvm_update_compile_flags(tco)
 get_property(dialect_libs GLOBAL PROPERTY MLIR_DIALECT_LIBS)

flang/tools/tco/tco.cpp

@@ -136,8 +136,6 @@ int main(int argc, char **argv) {
   fir::support::registerMLIRPassesForFortranTools();
   fir::registerOptCodeGenPasses();
   fir::registerOptTransformPasses();
-  InitializeAllTargets();
-  mlir::registerAsmPrinterCLOptions();
   mlir::registerMLIRContextCLOptions();
   mlir::registerPassManagerCLOptions();
   mlir::PassPipelineCLParser passPipe("", "Compiler passes to run");