chore: drop unused vars from Pkgfile

Follow-up for #466

Signed-off-by: Andrey Smirnov <andrey.smirnov@siderolabs.com>

Author: smira

Pkgfile

@@ -7,12 +7,6 @@ format: v1alpha2
 vars:
   TOOLCHAIN_IMAGE: ghcr.io/siderolabs/toolchain:v1.12.0-alpha.0
 
-  # stick to whatever version protobuf requires, see https://github.com/protocolbuffers/protobuf/blob/33d0cd03571aca25adf11d3a62add1d52d1cc27d/cmake/dependencies.cmake#L15
-  # renovate: datasource=github-releases depName=abseil/abseil-cpp
-  abseil_version: 20250127.1
-  abseil_sha256: b396401fd29e2e679cace77867481d388c807671dc2acc602a0259eeb79b7811
-  abseil_sha512: 8312acf0ed74fa28c6397f3e41ada656dbd5ca2bf8db484319d74b144ad19c0ebdc77f7f03436be6c6ca1cde706b9055079233cf0d6b5ada4ca48406f8a55dd8
-
   # renovate: datasource=github-tags depName=argp-standalone/argp-standalone
   argp_standalone_version: 1.5.0
   argp_standalone_sha256: c29eae929dfebd575c38174f2c8c315766092cec99a8f987569d0cad3c6d64f6
@@ -265,21 +259,6 @@ vars:
   pkg_config_sha256: 6fc69c01688c9458a57eb9a1664c9aba372ccda420a02bf4429fe610e7e7d591
   pkg_config_sha512: 4861ec6428fead416f5cbbbb0bbad10b9152967e481d4b0ff2eb396a9f297f552984c9bb72f6864a37dcd8fca1d9ccceda3ef18d8f121938dbe4fdf2b870fe75
 
-  # renovate: datasource=github-tags extractVersion=^v(?<version>.*)$ depName=protocolbuffers/protobuf
-  protobuf_version: 31.1
-  protobuf_sha256: 12bfd76d27b9ac3d65c00966901609e020481b9474ef75c7ff4601ac06fa0b82
-  protobuf_sha512: 5bf730e37183defcb29cf4831128f536ad8bcdce2b2b46b297d95f3de4a037b9ff3b6c57df66a039256dcefd828ba9d43c32b01a7a82aa5c881a9ae12cadb643
-
-  # renovate: datasource=github-releases depName=protocolbuffers/protobuf-go
-  protoc_gen_go_version: v1.36.6
-  protoc_gen_go_sha256: afa2b0e8f86d6da9d09c51ab4270d93c2888327220316982be9db345f523a6a1
-  protoc_gen_go_sha512: 8da292743722bf7322691b93c6374fd87a11c6d6c87606684f437e089b928842578c7492e57f19effe23b5b01ad415fd0047701026cfe8cbbaa6281722426be0
-
-  # renovate: datasource=github-tags depName=grpc/grpc-go
-  protoc_gen_go_grpc_version: v1.73.0
-  protoc_gen_go_grpc_sha256: 672bfc64c66eda3b05077c6ea2f4cb3f11e60c9c3604457e878b3c87becf3383
-  protoc_gen_go_grpc_sha512: a775ec505c21297ed1c8c0a0b618b7b83e40fd1241b8553e1e865ec1c8a403766422879015decd9fd16d2a011f223006e34c7ecc76fbe9935ffb3b94b47fdda8
-
   # renovate: datasource=github-tags depName=eliben/pyelftools
   pyelftools_version: v0.31
   pyelftools_sha256: 24815cbfff9c5f68f5268983f55d969540a087bfdaa73c93f1a88e2a771f80f1