Apply suggestions from code review

Co-authored-by: Tyler Gregg <greggt@amazon.com>

Author: popematt

src/main/java/com/amazon/ion/bytecode/bin10/SymbolTableHelper.kt

@@ -22,7 +22,7 @@ import edu.umd.cs.findbugs.annotations.SuppressFBWarnings
 /**
  * Helper to generate Bytecode instructions for Ion 1.0 style symbol tables.
  *
- * We cannot meaningfully read a partial symbol table, si it seems a reasonable requirement that the entire symbol
+ * We cannot meaningfully read a partial symbol table, so it seems a reasonable requirement that the entire symbol
  * table must be buffered before we generate bytecode for it. Therefore, this is re-usable for both continuable and
  * non-continuable bytecode generators.
  *

src/test/java/com/amazon/ion/bytecode/bin10/TypeIdHelperTest.kt

@@ -10,9 +10,6 @@ import org.junit.jupiter.params.provider.CsvSource
 
 class TypeIdHelperTest {
 
-    /*
-    fun isVariableLength(typeId: Int): Boolean = typeId.and(LOW_NIBBLE_MASK) == VAR_LENGTH_LOW_NIBBLE
-     */
 
     @ParameterizedTest
     @CsvSource(