Removed var-alloc premake option

I'll add it back later once there is a better configuration for variable
allocation.

premake5.lua

@@ -1,14 +1,4 @@
 -- options
-newoption {
-	trigger = "var-alloc",
-	value = "MODE",
-	description = "Sets how the compiler should allocate variables",
-	allowed = {
-		{ "pack", "Recycle slices as they become unused" },
-		{ "inc", "Every variable gets its own slice" }
-	}
-}
-
 newoption {
 	trigger = "clean-symbols",
 	description = "Cleans up the symbol table from unused symbols"
@@ -40,8 +30,6 @@ workspace "ssc"
 		links { "System", "arookas", "grammatica-1.6" }
 		
 		-- apply options
-		filter "options:var-alloc=pack"
-			defines { "SSC_PACK_VARS" }
 		filter "options:clean-symbols"
 			defines { "SSC_CLEAN_SYMBOLS" }
 		filter {}

readme.md

@@ -47,11 +47,10 @@ The script generates a solution with the following projects:
  - **sbdump**, a tool which dumps disassembly and other information on compiled SPC binaries
 
 Simply run the script through premake5 and build the resulting solution.
-There are also several compile-time options which are able to be configured via the premake5 command line:
+There are also compile-time options which are able to be configured via the premake5 command line:
 
 |Option|Description|
 |------|-----------|
-|var-alloc|Affects how variables are allocated slices. Available values are _pack_ and _inc_.|
 |clean-symbols|Cleans symbol table of unused symbols.|
 
 _**Note:** A Java runtime compatible with JDK 1.5 is required for generating the Grammatica parser classes during compilation.