Current Impala docs still suggest that LZO compression is supported

LZO support was removed from the Impala development environment in IMPALA-9709, more than 3 years agot, effectively ending support for LZO compression.
The Impala-lzo repo received the last commit at about the same time, for IMPALA-3741.

Despite this, even the current Impala docs list LZO compression as supported in several locations:

• The start of https://impala.apache.org/docs/build/plain-html/topics/impala_txtfile.html lists LZO as supported,
• https://impala.apache.org/docs/build/plain-html/topics/impala_txtfile.html#lzo describes how to create them,
• https://impala.apache.org/docs/build/plain-html/topics/impala_orc.html says that LZO compression is suuported for ORC files,
• while https://impala.apache.org/docs/build/plain-html/topics/impala_orc.html states that LZO compression is not available for Parquet files.

It would be worth reviewing Impala docs for LZO references and align the docs with current Impala functionality.