Coding - Clean up the FILES (#1002)

- Removed legacy metadata entries (EXTERNLIB, PACKAGES, DEFINES, FILES) that are no longer used by the build system
- Removed references to obsolete build artifacts (.lex, .yacc files) that appear to be superseded by generated .c/.h files
- Removed references to non-source files (README.md, .tcl scripts, GUID.txt) that shouldn't be listed in source file manifests

src/ModelingAlgorithms/TKBool/FILES.cmake

@@ -2,6 +2,4 @@
 set(OCCT_TKBool_FILES_LOCATION "${CMAKE_CURRENT_LIST_DIR}")
 
 set(OCCT_TKBool_FILES
-  EXTERNLIB
-  PACKAGES
 )

src/ModelingAlgorithms/TKBool/TopOpeBRep/FILES.cmake

@@ -2,7 +2,6 @@
 set(OCCT_TopOpeBRep_FILES_LOCATION "${CMAKE_CURRENT_LIST_DIR}")
 
 set(OCCT_TopOpeBRep_FILES
-  FILES
   TopOpeBRep.cxx
   TopOpeBRep.hxx
 

src/ModelingAlgorithms/TKBool/TopOpeBRepTool/FILES.cmake

@@ -2,7 +2,6 @@
 set(OCCT_TopOpeBRepTool_FILES_LOCATION "${CMAKE_CURRENT_LIST_DIR}")
 
 set(OCCT_TopOpeBRepTool_FILES
-  FILES
   TopOpeBRepTool.cxx
   TopOpeBRepTool.hxx
   TopOpeBRepTool_2d.cxx