GPU: Remove the broken frame_skip option.

Fixes #1960.

src/citra/config.cpp

@@ -59,7 +59,6 @@ void Config::ReadValues() {
 
     // Core
     Settings::values.use_cpu_jit = sdl2_config->GetBoolean("Core", "use_cpu_jit", true);
-    Settings::values.frame_skip = sdl2_config->GetInteger("Core", "frame_skip", 0);
 
     // Renderer
     Settings::values.use_hw_renderer = sdl2_config->GetBoolean("Renderer", "use_hw_renderer", true);

src/citra/default_ini.h

@@ -42,10 +42,6 @@ pad_circle_modifier_scale =
 # 0: Interpreter (slow), 1 (default): JIT (fast)
 use_cpu_jit =
 
-# The applied frameskip amount. Must be a power of two.
-# 0 (default): No frameskip, 1: x2 frameskip, 2: x4 frameskip, 3: x8 frameskip, etc.
-frame_skip =
-
 [Renderer]
 # Whether to use software or hardware rendering.
 # 0: Software, 1 (default): Hardware