remove LZ4

Revert "compressed: Makefile: fix typo"

This reverts commit 419712d1a34634a720310d8594c85ea0c3c7d599.

Revert "LZ4: compression/decompression signedness mismatch (v2)"

This reverts commit ac76a1697a11eb6edae87876611c1dbaf321ed6e.

Revert "crypto-add-lz4-cryptographic-api-fix"

This reverts commit e4e61b09a8d84b22e300546eb80f8c39247ae744.

Revert "crypto: add lz4 Cryptographic API"

This reverts commit 7dd1f21fb9e38532ab1dcef6a2c7d674329870c9.

Revert "lib-add-lz4-compressor-module-fix"

This reverts commit 8e634925f4a7b3f4b7ab5308f8d9fb693d3270b2.

Revert "lib: add lz4 compressor module"

This reverts commit 03759c6013405c4ddb107298ca3bcf0612ad3533.

Revert "arm: Remove enforced Os flag for LZ4 decompressor"

This reverts commit 889f369b10816291e3eb8259c2fe57eef9ec0deb.

Revert "arm: add support for LZ4-compressed kernel"

This reverts commit 03f62e63f935dd01bc42aaa482e3746d8f3557de.

Revert "kbuild: fix for updated LZ4 tool with the new streaming format"

This reverts commit 06dcbab417b4131026de54108a16998e6174641d.

Revert "lib: add support for LZ4-compressed kernel"

This reverts commit 3f93a431388bad44564038a90e0244e5a9fac5d4.

Revert "decompressor: add LZ4 decompressor module"

This reverts commit 58db75c8f993581315b394f4172d2b68cc843611.