Remove 143 KB of unnecessary syntax highlighting definitions in 22 files,
because MC 4.5.0 only supports hard-coded syntax highlighting (big string in
edit/syntax.c). Syntax definitions were externalised CVS version 1.17 of that
file, but in 4.5.0 we have version 1.11 which is three years older.
The fascinating thing is that nobody ever complained about this.