Remove a couple incorrect comments

Alc/ALu.c

@@ -958,7 +958,6 @@ another_source:
     increment = (ALint)(Pitch*(ALfloat)(1L<<FRACTIONBITS));
     if(increment <= 0)  increment = (1<<FRACTIONBITS);
 
-    /* Compute the gain steps for each output channel */
     if(ALSource->FirstStart)
     {
         for(i = 0;i < OUTPUTCHANNELS;i++)

OpenAL32/alBuffer.c

@@ -37,15 +37,6 @@ static void ConvertData(ALfloat *dst, const ALvoid *src, ALint origBytes, ALsize
 static void ConvertDataRear(ALfloat *dst, const ALvoid *src, ALint origBytes, ALsizei len);
 static void ConvertDataIMA4(ALfloat *dst, const ALvoid *src, ALint origChans, ALsizei len);
 
-/*
- *  AL Buffer Functions
- *
- *  AL Buffers are shared amoung Contexts, so we store the list of generated Buffers
- *  as a global variable in this module.   (A valid context is not required to make
- *  AL Buffer function calls
- *
- */
-
 /*
 * Global Variables
 */