Revert "Start of Integer flags implementation"

This reverts #4713. The implementation in that PR is not accurate.
It does not reflect the behavior seen in hardware.

src/video_core/shader/shader_ir.h

@@ -346,9 +346,6 @@ private:
     /// Access a bindless image sampler.
     ImageEntry& GetBindlessImage(Tegra::Shader::Register reg, Tegra::Shader::ImageType type);
 
-    /// Recursive Iteration over the OperationNode operands, searching for GprNodes.
-    void SearchOperands(NodeBlock& nb, Node var);
-
     /// Extracts a sequence of bits from a node
     Node BitfieldExtract(Node value, u32 offset, u32 bits);