video_core: Remove unused variables

src/video_core/debug_utils/debug_utils.cpp

@@ -298,7 +298,6 @@ void DumpShader(const std::string& filename, const Regs::ShaderConfig& config, c
     }
 
     // Write data to file
-    static int dump_index = 0;
     std::ofstream file(filename, std::ios_base::out | std::ios_base::binary);
 
     for (auto& chunk : writing_queue) {
@@ -695,7 +694,6 @@ void DumpTexture(const Pica::Regs::TextureConfig& texture_config, u8* data) {
     for (unsigned y = 0; y < texture_config.height; ++y)
     {
         u8* row_ptr = (u8*)buf + y * row_stride;
-        u8* ptr = row_ptr;
         png_write_row(png_ptr, row_ptr);
     }
 

src/video_core/shader/shader.cpp

@@ -146,7 +146,6 @@ OutputVertex Run(UnitState<false>& state, const InputVertex& input, int num_attr
 DebugData<true> ProduceDebugInfo(const InputVertex& input, int num_attributes, const Regs::ShaderConfig& config, const State::ShaderSetup& setup) {
     UnitState<true> state;
 
-    const auto& shader_memory = setup.program_code;
     state.program_counter = config.main_offset;
     state.debug.max_offset = 0;
     state.debug.max_opdesc_id = 0;

src/video_core/shader/shader_jit_x64.cpp

@@ -749,7 +749,6 @@ void JitCompiler::Compile_NextInstr(unsigned* offset) {
 
 CompiledShader* JitCompiler::Compile() {
     const u8* start = GetCodePtr();
-    const auto& code = g_state.vs.program_code;
     unsigned offset = g_state.regs.vs.main_offset;
 
     // The stack pointer is 8 modulo 16 at the entry of a procedure