engine: remove outdated docs

Signed-off-by: Ronald Caesar <github43132@proton.me>

include/bal_engine.h

@@ -61,9 +61,6 @@ extern "C"
         uint32_t original_variable_index;
     } bal_source_variable_t;
 
-    /// Holds the Intermediate Representation buffers, SSA state, and other
-    /// important metadata. The structure is divided into hot and cold data aligned
-    /// to 64 bytes. Both hot and cold data lives on their own cache lines.
     BAL_ALIGNED(64) typedef struct
     {
         /// The guest CPU state.

src/bal_engine.c

@@ -60,8 +60,6 @@ static_assert(16 == sizeof(block_cache_entry_t), "Block cache entry size mismatc
 
 typedef struct
 {
-    // Tier 1 State
-
     bal_tier1_compiler_t    tier1_compiler;
     bal_executable_buffer_t tier1_buffer;
     void                   *ir_arena_base;